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Journal articles on the topic 'Displacement-based analysis'

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Author: Grafiati

Published: 10 December 2022

Last updated: 29 January 2023

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1

Lin, L., and Y. L. Gao. "Inelastic Versus Elastic Displacement-Based Intensity Measures for Seismic Analysis." International Journal of Engineering and Technology 6, no. 6 (December 2014): 476–80. http://dx.doi.org/10.7763/ijet.2014.v6.744.

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2

McCombie, Paul F. "Displacement based multiple wedge slope stability analysis." Computers and Geotechnics 36, no. 1-2 (January 2009): 332–41. http://dx.doi.org/10.1016/j.compgeo.2008.02.008.

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3

Tocci, Tommaso, Lorenzo Capponi, and Gianluca Rossi. "ArUco marker-based displacement measurement technique: uncertainty analysis." Engineering Research Express 3, no. 3 (August 30, 2021): 035032. http://dx.doi.org/10.1088/2631-8695/ac1fc7.

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4

UCHIYAMA, Naoki, Eiji ARAI, and Masanori IGOSHI. "Geometric Model Based Displacement Analysis System of Mechanisms." JSME International Journal Series C 41, no. 1 (1998): 134–42. http://dx.doi.org/10.1299/jsmec.41.134.

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5

Liang, Robert Y., Y. X. Feng, S. J. Vitton, and Suckhong Lee. "Displacement-Based Stability Analysis for Anchor Reinforced Slope." Soils and Foundations 38, no. 3 (September 1998): 27–39. http://dx.doi.org/10.3208/sandf.38.3_27.

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6

Saatci, E., and G. Yazıcı. "Sloshing Displacement Measurements based on Morphological Image Analysis." Acta Physica Polonica A 135, no. 5 (May 2019): 949–54. http://dx.doi.org/10.12693/aphyspola.135.949.

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7

Uchiyama, Naoki, Eiji Arai, and Masanori Igoshi. "Geometric-Model-Based Displacement Analysis System of Mechanisms." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 575 (1994): 2468–74. http://dx.doi.org/10.1299/kikaic.60.2468.

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8

Reggiani Manzo, Natalia, and Michalis F. Vassiliou. "Displacement‐based analysis and design of rocking structures." Earthquake Engineering & Structural Dynamics 48, no. 14 (September 2, 2019): 1613–29. http://dx.doi.org/10.1002/eqe.3217.

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9

Marin, Alexandru, and Jan Laue. "Displacement-Based Seismic Analysis of Slopes, Dams and Embankments." Journal of Earthquake and Tsunami 10, no. 04 (October 2016): 1650005. http://dx.doi.org/10.1142/s1793431116500056.

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The seismic design of slopes, dams, or embankments is usually based on limit-equilibrium calculations, which include the seismic action by means of an equivalent static force acting on the failure mechanism. This approach is limited, especially in situations in which existing over-inclined structures or steep natural slopes have to be analyzed. An alternative approach which overcomes the limitations of the classical limit-equilibrium calculations is available with displacement-based methods. The displacement-based analysis offers the possibility of evaluating the seismic behavior in terms of displacements, in contrast to the limit-equilibrium calculations, which only provide information about the ratio between the stabilizing and destabilizing forces acting on the structure. The displacement-based approach allows the analysis of the seismic behavior and, based on the resulting deformations, the corresponding risk evaluation. In addition to that, the optimized seismic design of new geotechnical structures is possible by ensuring the compliance of the seismic behavior with given requirements. This paper presents a displacement-based procedure to be incorporated in the Swiss design codes for the seismic analysis of slopes, dams, and embankments.

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10

Katona, Tamás János, László Tóth, and Erzsébet Győri. "Fault Displacement Hazard Analysis Based on Probabilistic Seismic Hazard Analysis for Specific Nuclear Sites." Applied Sciences 11, no. 15 (August 3, 2021): 7162. http://dx.doi.org/10.3390/app11157162.

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Permanent ground displacements/deformations caused by earthquakes can seriously challenge the safety of the nuclear power plants. The state-of-the-art hazard analysis methods provide a fault displacement hazard curve, i.e., the annual probability of given measure of displacement will be exceeded. The evaluation of ground displacement hazard requires great effort, empirical evidence, and sufficient data for the characterization of the fault activity and capability to cause permanent surface displacement. There are practical cases when the fault at the site area revealed to be active, and, despite this, there are no sufficient data for the evaluation of permanent ground displacements hazard and for judging on the safety significance of permanent ground displacement. For these cases, a methodology is proposed that is based on the seismotectonic modelling and results of the probabilistic seismic hazard analysis. The method provides conservative assessment of the annual probability of fault displacement that allows the decision whether permanent displacement hazard is relevant to nuclear power plant safety. The feasibility and applicability of the method is demonstrated for the Paks site, Hungary.

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11

Sun, Jun, Bo Peng, Cynthia Changxin Wang, Kunxiang Chen, Botao Zhong, and Jianjie Wu. "Building displacement measurement and analysis based on UAV images." Automation in Construction 140 (August 2022): 104367. http://dx.doi.org/10.1016/j.autcon.2022.104367.

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Bovenga, Fabio, Guido Pasquariello, and Alberto Refice. "Statistically-Based Trend Analysis of MTInSAR Displacement Time Series." Remote Sensing 13, no. 12 (June 11, 2021): 2302. http://dx.doi.org/10.3390/rs13122302.

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Current multi-temporal interferometric Synthetic Aperture Radar (MTInSAR) datasets cover long time periods with regular temporal sampling. This allows high-rate and non-linear trends to be observed, which typically characterize pre-failure warning signals. In order to fully exploit the content of MTInSAR products, methods are needed for the automatic identification of relevant changes along displacement time series and the classification of the targets on the ground according to their kinematic regime. This work reviews some of the classical procedures for model ranking, based on statistical indices, which are applied to the characterization of MTInSAR displacement time series, and introduces a new quality index based on the Fisher distribution. Then, we propose a procedure to recognize automatically the minimum number of parameters needed to model a given time series reliably within a predefined confidence level. The method, though general, is explored here for polynomial models, which can be used in particular to approximate satisfactorily and with computational efficiency the piecewise linear trends that are generally used to model warning signals preceding the failure of natural and artificial structures. The algorithm performance is evaluated under simulated scenarios. Finally, the proposed procedure is also demonstrated on displacement time series derived by the processing of Sentinel-1 data.

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13

Ye, Qing, Jun Feng Dong, and Yong Mei Zhang. "Human Motion Analysis Based On Silhouette and Centroid Displacement." Applied Mechanics and Materials 333-335 (July 2013): 1139–44. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1139.

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Human motion analysis in an intelligence surveillance system is a hot research topic in computer vision field.In this paper we proposed a motion recognition method based on silhouette information and centroid displacement for static environment.We used background subtraction method added background update and did binarization processing on foreground image by using adaptive threshold segmentation technique,then extracted moving target from the videos.Last we used silhouette information and centroid displacement as human motion features for behaviour analysis.Experiments show that the method has high accuracy rate at daily behaviour recognition.

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14

Gorska, Karolina, and Marek Wyjadłowski. "Analysis of displacement of excavation based on inclinometer measurements." Studia Geotechnica et Mechanica 34, no. 4 (October 1, 2012): 3–16. http://dx.doi.org/10.2478/sgm041201.

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Abstract The article presents back analysis to estimate geotechnical parameters of fill layer. The agreement between field measurements and theoretical calculations was examined. Displacements of a cantilever CFA bored pile wall were monitored. The inclinometric measurements were taken directly after pile construction and according to excavation process. Over 200 calculation series were performed, with changing fill parameters. The calculations employed the actual geometric and material parameters of the pile wall, as well as geotechnical parameters of layered soil. The parameters estimated through back analysis were the angle of internal friction and Young’s modulus of fill layer. In the case discussed, pile wall cap displacement was the response of the system, and soil medium parameters were the input data. The agreement between theoretical calculations and inclinometer measurements was assessed in accordance with two functions. The measured horizontal displacements of excavation support structure assumed different values at the two inclinometer sites analysed. Back analysis results for these sites are approximately convergent for a final excavation depth.

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15

Jiménez, Felipe, Jon Arrue, Gotzon Aldabaldetreku, Gaizka Durana, Joseba Zubia, Olaf Ziemann, and Christian-Alexander Bunge. "Analysis of a plastic optical fiber-based displacement sensor." Applied Optics 46, no. 25 (August 22, 2007): 6256. http://dx.doi.org/10.1364/ao.46.006256.

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16

Pei, Huafu, Siqi Zhang, Lalit Borana, Yi Zhao, and Jianhua Yin. "Slope stability analysis based on real-time displacement measurements." Measurement 131 (January 2019): 686–93. http://dx.doi.org/10.1016/j.measurement.2018.09.019.

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17

Iqbal, Sohail, Rana I. Shakoor, Hammad N. Gilani, Hussain Abbas, and Afzaal M. Malik. "Performance Analysis of Microelectromechanical System Based Displacement Amplification Mechanism." Iranian Journal of Science and Technology, Transactions of Mechanical Engineering 43, no. 3 (June 27, 2018): 507–28. http://dx.doi.org/10.1007/s40997-018-0213-6.

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18

Jirásek, M., and S. Marfia. "Non-local damage model based on displacement averaging." International Journal for Numerical Methods in Engineering 63, no. 1 (February 14, 2005): 77–102. http://dx.doi.org/10.1002/nme.1262.

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19

An, Joon-Sang, Kyung-Nam Kang, Ju-Young Choi, Won-Suh Sung, Vathna Suy, and Ki-Il Song. "Tunnel Back Analysis Based on Differential Evolution Using Stress and Displacement." Advances in Civil Engineering 2020 (March 12, 2020): 1–10. http://dx.doi.org/10.1155/2020/8156573.

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The stability of tunnels has mainly been evaluated based on displacement. Because displacement due to the excavation process is significant, back analysis of the structure and ground can be performed easily. Recently, the length of a segment-lined tunnel driven by the mechanized tunneling method is increasing. Because the internal displacement of a segment-lined tunnel is trivial, it is difficult to analyze the stability of segment-lined tunnels using the conventional method. This paper proposes a back analysis method using stress and displacement information for a segment-lined tunnel. A differential evolution algorithm was adopted for tunnel back analysis. Back analysis based on the differential evolution algorithm using stress and displacement was established and performed using the finite difference code, FLAC3D, and built-in FISH language. Detailed flowcharts of back analysis based on DEA using both monitored displacement stresses were also suggested. As a preliminary study, the target variables of the back analysis adopted in this study were the elastic modulus, cohesion, and friction angle of the ground. The back analysis based on the monitored displacement is useful when the displacement is significant due to excavation. However, the conventional displacement-based back analysis is unsuitable for a segment-lined tunnel after construction because of its trivial internal displacement since the average error is greater than 32% and the evolutionary calculation is finalized due to the maximum iteration criteria. The average error obtained from the proposed back analysis algorithm using both stress and displacement ranged within approximately 6–8%. This also confirms that the proposed back analysis algorithm is suitable for a segment-lined tunnel.

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20

Li, Zhongcheng, Zhidong Bao, Li Chen, Hongyu Zhao, Zenglai Jiang, Hairui Wu, and Wanchun Zhao. "Optimization of EOR Displacement Methods Based on Multiple Factor Analysis." Geofluids 2022 (July 22, 2022): 1–10. http://dx.doi.org/10.1155/2022/6588741.

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In order to ensure that the new block can select the best displacement method, this paper determines 23 key reservoir basic parameters based on the statistical analysis of the field application of the tertiary oil recovery displacement method in typical blocks at home and abroad. The best displacement method is selected by the fuzzy evaluation method, and the correlation degree between the target block and the typical block is calculated by the improved Deng correlation method; then, the ultimate recovery rate of the target block is determined. Taking a new block of an oil field in China as an example, the optimal displacement method of three typical blocks of polymer flooding, burning oil layer flooding, and ternary composite flooding is selected by the fuzzy evaluation method; then, the improved Deng correlation method calculates that the final recovery rate of the new block using burning oil layer flooding is the tallest, and the burning oil layer flooding is selected the best way to replace the block. Based on this, the optimal results of displacement method are analyzed when porosity and air permeability of the new block reservoir are changed. The method proposed in this paper provides a calculation basis for the optimization of displacement method of the new blocks.

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21

Zhou, Dao Chuan, Guo Rong Chen, and Li Ying Nie. "Displacement-Based Design for RC Bridge Columns Based on Chinese Code." Advanced Materials Research 243-249 (May 2011): 3808–19. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3808.

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A comprehensive study of displacement-based design for reinforced concrete bridge columns is conducted. Section analysis software UC-Fyber is used to analyze the bending moment and curvature performance of columns’ sections, based on this, a new calculation method of target displacement of RC bridge columns is educed. Elastic displacement response spectrum, inelastic displacement response spectrum and inelastic demand spectrum are educed from acceleration spectra of Chinese Code JTG/T B02-01-2008; three simplified methods for displacement demand determination are developed. Example of the displacement-based design of bridge column was studied and checked by dynamic inelastic time-history analysis to clarify the reasonableness of the developed methods. Research shows that target displacement of RC bridge columns is relevant with concrete strength grade, longitudinal reinforcement ratio, height and the section form, etc; equivalent linearization method and inelastic displacement response spectrum method are based on the design response spectrum, could reach the target displacement and consider structure safety requirement; demand spectrum method is a simple and direct way to show design with graphics mode, with deficiency of structure capacity spectrum curve from pushover analysis differing from the reality.

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22

Liu, Ning, Wei Shen Zhu, and Xiao Jing Li. "Analysis of Finite Element Viscoelastic Displacement Based on Kelvin Model." Advanced Materials Research 33-37 (March 2008): 413–20. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.413.

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Considering the time effect of surrounding rock and the long time stability of the underground caverns after being excavated, a method on the finite element viscoelastic displacement based on Kelvin model. The recursion formula is obtained by the displacement analytic solution of Kelvin model. It can be used to predict the viscoelastic displacement development fast and accurately. Finally this method is employed into a project, and the calculated values by this method agree well with the measured values. Prove that the method is effective.

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23

Luo, Hongming, Guanhua Sun, Lipeng Liu, and Wei Jiang. "Vertex Displacement-Based Discontinuous Deformation Analysis Using Virtual Element Method." Materials 14, no. 5 (March 6, 2021): 1252. http://dx.doi.org/10.3390/ma14051252.

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To avoid disadvantages caused by rotational degrees of freedom in the original Discontinuous Deformation Analysis (DDA), a new block displacement mode is defined within a time step, where displacements of all the block vertices are taken as the degrees of freedom. An individual virtual element space V1(Ω) is defined for a block to illustrate displacement of the block using the Virtual Element Method (VEM). Based on VEM theory, the total potential energy of the block system in DDA is formulated and minimized to obtain the global equilibrium equations. At the end of a time step, the vertex coordinates are updated by adding their incremental displacement to their previous coordinates. In the new method, no explicit expression for the displacement u is required, and all numerical integrations can be easily computed. Four numerical examples originally designed by Shi are analyzed, verifying the effectiveness and precision of the proposed method.

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24

Tanmane, Suresh. "Seismic Analysis of Elevated Metro Bridge." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (June 30, 2022): 4348–52. http://dx.doi.org/10.22214/ijraset.2022.44595.

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Abstract: A metro rail system is more preferred type of metro system due to ease of construction and also it makes urban areas more accessible with very less construction difficulty. metro concept is very easy to transport large numbers of people and transportation. In metro city like Delhi, Kolkata, Chennai and Mumbai is very populated city An elevated metro system has two major elements pier and box girder. The codes are now moving towards a performance-based (displacement-based) design approach, which consider. All the information are given by MMRC and considered the data value in this design as per the target performances at the design stage. Which is located to ShyamNager metro station in Mumbai, The present study focuses on pier of an elevated metro structural system conventionally the Double Decker pier of a metro bridge is designed using a force based approach. During a seismic loading, the behaviour of a single pier elevated bridge relies mostly on the ductility and the displacement capacity. It is important to check the ductility of such single piers. Force based methods do not explicitly check the displacement capacity during the design. The codes are now moving towards a performance-based (displacement-based) design approach, which consider the design as per the target performances at the design stage. Performance of a pier designed by a Direct Displacement Based Design is compared with that of a force-based designed one. The design of the pier is done by both force based seismic design method and direct displacement based seismic design method the study.

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25

Chen, Gongfa, Zhihua Wu, Chunjian Gong, Jiqiao Zhang, and Xiaoli Sun. "DIC-Based Operational Modal Analysis of Bridges." Advances in Civil Engineering 2021 (February 4, 2021): 1–13. http://dx.doi.org/10.1155/2021/6694790.

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A new method has been proposed to identify the natural frequencies and mode shapes of a bridge model, in which the digital image correlation (DIC) technique is used to track the dynamic displacement. A key issue in vibration-based damage detection for a bridge is to determine its modal parameters. It is difficult to use traditional acceleration sensors to obtain the accurate mode shapes of bridges as the sensors are only deployed on a few measurement points of the bridges. In this article, the DIC technique is used to capture the movement of the entire experimental bridge model. A steel truss is used as a bridge model and stimulated by a hammer; its dynamic displacement is recorded by using a digital video camera. The correlation analysis is used to track the displacement of the points of interest, and their displacement time histories are inputted into a modal analysis system; the natural frequencies and mode shapes of the bridge model were obtained by both operational modal analysis (OMA) and traditional experimental modal analysis (EMA) methods. (1) The DIC results are compared with those obtained by a traditional acceleration sensor-based method; the natural frequencies obtained by the two measurement methods are very close. (2) The DIC results are sensitive to the amplitude of the measured displacement and the shooting distance; small displacement amplitudes and long shooting distance may result in the low quality of the measured time-history curves, and low-frequency noise signals might be observed in their power spectral density (PSD) curves, while they can be easily solved by the filtering method in this article. (3) In addition, the first frequencies obtained by EMA and OMA are very close, which validates the applicability of the DIC measurement under ambient excitation. The research has illustrated the feasibility of the DIC method for obtaining the modal parameters of the bridges.

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26

Lin, Zian, Xiyan Sun, and Yuanfa Ji. "Landslide Displacement Prediction Based on Time Series Analysis and Double-BiLSTM Model." International Journal of Environmental Research and Public Health 19, no. 4 (February 12, 2022): 2077. http://dx.doi.org/10.3390/ijerph19042077.

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In recent years, machine learning models facilitated notable performance improvement in landslide displacement prediction. However, most existing prediction models which ignore landslide data at each time can provide a different value and meaning. To analyze and predict landslide displacement better, we propose a dynamic landslide displacement prediction model based on time series analysis and a double-bidirectional long short term memory (Double-BiLSTM) model. First, the cumulative landslide displacement is decomposed into trend and periodic displacement components according to time series analysis via the exponentially weighted moving average (EWMA) method. We consider that trend displacement is mainly influenced by landslide factors, and we apply a BiLSTM model to predict landslide trend displacement. This paper analyzes the internal relationship between rainfall, reservoir level and landslide periodic displacement. We adopt the maximum information coefficient (MIC) method to calculate the correlation between influencing factors and periodic displacement. We employ the BiLSTM model for periodic displacement prediction. Finally, the model is validated against data pertaining to the Baishuihe landslide in the Three Gorges, China. The experimental results and evaluation indicators demonstrate that this method achieves a better prediction performance than the classical prediction methods, and landslide displacement can be effectively predicted.

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Shen, Li, Shi Qiao Gao, An Ran Jiang, and Cai Feng Wang. "Analysis of Micro Structure’s Elastic Stiffness." Applied Mechanics and Materials 184-185 (June 2012): 890–95. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.890.

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Based on the calculation and analysis of three kinds of elastic beam’s stiffness coefficient in micro machined gyroscope, the results show: in the condition of small displacement，forces and displacement are linear relationship in clamped-clamped beam, crab-foot beam and bow beam; but as the displacement increases, the relationship between forces and displacement are obvious non-linear in clamped-clamped beam. When the displacement is three times the length of beam’s width, the bow beam’s force and displacement are linear relationship. By ANSYS crab-foot beam and bow beam’s stiffness is obtained, the simulation results and the polynomial fitting coefficient are all credible.

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28

Bout, A. "A displacement-based geometrically non-linear constant stress element." International Journal for Numerical Methods in Engineering 36, no. 7 (April 15, 1993): 1161–88. http://dx.doi.org/10.1002/nme.1620360706.

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29

Lin, Zian, Yuanfa Ji, Weibin Liang, and Xiyan Sun. "Landslide Displacement Prediction Based on Time-Frequency Analysis and LMD-BiLSTM Model." Mathematics 10, no. 13 (June 24, 2022): 2203. http://dx.doi.org/10.3390/math10132203.

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In landslide displacement prediction, random factors that would affect the performance of prediction are usually ignored by using a time series analysis method. In order to solve this problem, in this paper, a landslide displacement prediction model, the local mean decomposition-bidirectional long short-term memory (LMD-BiLSTM), is proposed based on the time-frequency analysis method. The model uses the local mean decomposition (LMD) algorithm to decompose landslide displacement and obtains several subsequences of landslide displacement with different frequencies. This paper analyzes the internal relationship between the landslide displacement and rainfall, reservoir water level, and landslide state. The maximum information coefficient (MIC) algorithm is used to calculate the intrinsic correlation between each subsequence of landslide displacement and rainfall, reservoir water level, and landslide state. Subsequences of influential factors with high correlation are selected as input variables of the bidirectional long short-term memory (BiLSTM) model to predict each subsequence. Finally, the predicted results of each of the subsequences are added to obtain the final predicted displacement. The proposed LMD-BiLSTM model effectiveness is verified based on the Baishuihe landslide. The prediction results and evaluation indexes show that the model can accurately predict landslide displacement.

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Yang, Shuofei, Jian S. Dai, Yan Jin, and Rao Fu. "Finite displacement screw-based group analysis of 3PRS parallel mechanisms." Mechanism and Machine Theory 171 (May 2022): 104727. http://dx.doi.org/10.1016/j.mechmachtheory.2022.104727.

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31

Kimura, Yoshitomi, Yoshito Maeda, Kenji Matsui, and Yasuyuki Yokota. "Stability Analysis Based on Expand Displacement Method for Pile Foundations." Doboku Gakkai Ronbunshu, no. 568 (1997): 79–87. http://dx.doi.org/10.2208/jscej.1997.568_79.

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Li, Hua, Jian Zhang, Meng-Chun Zhong, and Chun-Lin Zhang. "Recoil Mechanism Displacement De-Noising Processing Based on Wavelet Analysis." Journal of Computational and Theoretical Nanoscience 12, no. 12 (December 1, 2015): 6039–43. http://dx.doi.org/10.1166/jctn.2015.4755.

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An, Senyou, Jun Yao, Yongfei Yang, Wenjie Zhang, Jianlin Zhao, and Aifen Li. "The microscale analysis of reverse displacement based on digital core." Journal of Natural Gas Science and Engineering 48 (December 2017): 138–44. http://dx.doi.org/10.1016/j.jngse.2016.12.014.

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Xu, Hui, and Wan-kui Bu. "Deformation Analysis of Bending Stratum Based on Displacement Function Method." Geotechnical and Geological Engineering 38, no. 3 (January 22, 2020): 2859–72. http://dx.doi.org/10.1007/s10706-020-01192-x.

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35

Shoaib, Muhammad, Nor Hisham, Noohul Basheer, and Mohammad Tariq. "Frequency and displacement analysis of electrostatic cantilever-based MEMS sensor." Analog Integrated Circuits and Signal Processing 88, no. 1 (January 25, 2016): 1–11. http://dx.doi.org/10.1007/s10470-016-0695-3.

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36

Jianqin, Zhou, and Hu Zhengfeng. "3-D object profilometry based on direct fringe displacement analysis." Optics and Lasers in Engineering 21, no. 4 (January 1994): 187–98. http://dx.doi.org/10.1016/0143-8166(94)90072-8.

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37

Yang, Lu, Jin Xing Chu, Yu Shu Deng, Xin Xu, and Kang Wei. "Analysis of a Micro-Displacement Amplification Mechanism Based on Piezoelectric Stack." Advanced Materials Research 940 (June 2014): 262–66. http://dx.doi.org/10.4028/www.scientific.net/amr.940.262.

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In this paper, a flexure hinge micro-displacement magnifying mechanism was designed, which was based on the principles of triangle amplification, and the amplifier was driven by piezoelectric stack. The displacement of piezoelectric stack was amplified by the flexure hinges micro-displacement magnifying mechanism. In order to test the static and dynamic carried on it. Not only the characteristics of good linearity, magnification, high positioning resolution and high frequency response achieved but also the design theory approved its correctness in the experiment.

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Lin, Si Yuan, Ke Wang, Yue Chen Fan, Tao Yan, and Neng He. "Error Analysis of Displacement Measurements Based on Digital Image Correlation Method." Applied Mechanics and Materials 333-335 (July 2013): 207–14. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.207.

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The error of displacement measurements by digital image correlation method is examined from a pratical perspective. Different from previous research, this study focuses on external factors influencing the accuracy of displacement measurement in the study of cooperative mark recognition and camera placement. Our major objectives of this research include indentificating the chief error sources and assessing their influences on the testing results. There are 5 parts in this paper. We start with a brief introduction of the necessity of analyzing the errors. After reviewing the principles of digital image correlation method, an detailed discussion of error soureces of this method is provided. Then we design a pratical experiment measuring the characteristics of a spring vibrator using the digital image correlation mesurement systems and laser displacement sensor. By comparing the results from two ways of measurment, we end the study with the conclusion that the accuracy of displacement measuring by digital image correlation method is tightly related to the choice of cooperative mark and camera intersection angle.

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Tian, Wen Chao, and Yin Tang Yang. "Analysis of an Electrostatic Micro-Actuator Based on Vertically-Horizontally Bending." Key Engineering Materials 562-565 (July 2013): 522–27. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.522.

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For the problems of the oversized voltage and undersized displacement in the electrostatic micro actuator of transverse loading recently, a silicon micro actuator model with characteristics of large-displacement and low-voltage is presented based on the principle of vertically-horizontally bending. The deflection equation of the micro actuator is derived. The axial static electricity, temperature stress and axial squeezing pressure on the deformation of micro-beam are analyzed. The simulation shows that the displacement is as big as 17.5μm when the driving voltage is as low as 5V. The displacement is much larger than the deformation of the current micro actuator.

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Sheth, Rutvik, Jayesh Prajapati, and Devesh Soni. "Comparative study nonlinear static pushover analysis and displacement based adaptive pushover analysis method." International Journal of Structural Engineering 9, no. 1 (2018): 81. http://dx.doi.org/10.1504/ijstructe.2018.090753.

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Lin, Chao, Mingdong Jiang, Ping Xu, and Shan Zheng. "Motion and Load Analysis of the Flexible Platform Based on Noncontact Processing." Micromachines 13, no. 7 (June 24, 2022): 988. http://dx.doi.org/10.3390/mi13070988.

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In this paper, we explore the applicability of the positioning stage based on flexible hinges for noncontact processing. According to the actual application of the positioning stage, Hooke’s law, the Euler–Bernoulli beam theory, and the geometric relationship of the structure are applied to analyze the coupled displacement in the movement of the positioning stage and the changes in the performance of the positioning stage caused by external loads. The coupled-displacement matrix and the external-load matrix obtained from the analysis are substituted into the ideal-displacement expression of the positioning stage to obtain the displacement expression of the platform in noncontact machining. The platform trajectory obtained by the referenced curve is analyzed. In addition, the coupled displacement in the X- and Y-directions and the coupled displacement caused by the external load in the Z-direction are nanoscales and about one-thousandth of the output displacement, which meets the requirement of tracking accuracy for micron-level machining. Finally, we use finite element analysis (FEA) and experiments to prove the correctness of the theoretical analysis.

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Cheng, Hao, and Xiaoping Zhou. "A novel displacement-based rigorous limit equilibrium method for three-dimensional landslide stability analysis." Canadian Geotechnical Journal 52, no. 12 (December 2015): 2055–66. http://dx.doi.org/10.1139/cgj-2015-0050.

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Conventional stability analysis of landslides is investigated using the factor of safety of the entire sliding body, which provides no information concerning displacements of the analyzed landslides. In this paper, a novel displacement-based rigorous limit equilibrium method is proposed to investigate the displacements and stabilities of three-dimensional landslides. The relationship between the shear stresses acting on the base of the columns and the shear displacements is established based on the hyperbolic soil model, which can be directly obtained from direct shear tests. According to the displacement compatibility among the columns, the shear displacements of all columns can be determined by the vertical and horizontal displacements at a key point. Combining the six equilibrium conditions of the discretized columns with the nonlinear constitutive relation between stress and displacement of soils, the vertical displacement at the key point can be determined. By introducing the strength reduction technique into the displacement-based rigorous limit equilibrium method, the relationship between the reduction factor and the vertical displacement can be obtained. The displacement and the safety factor of three-dimensional landslides can be defined. Moreover, two cases are given to verify the robustness and precision of the present method in detail.

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Edem, I. B., and P. D. Gosling. "Physically stabilised displacement-based ANS solid-shell element." Finite Elements in Analysis and Design 74 (October 2013): 30–40. http://dx.doi.org/10.1016/j.finel.2013.05.009.

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Yan, Lan, Anna Jiang, Feng Jiang, Guangda Liu, Fuzeng Wang, and Xian Wu. "Design and Performance Analysis of a Micro-Displacement Worktable Based on Flexure Hinges." Micromachines 13, no. 4 (March 26, 2022): 518. http://dx.doi.org/10.3390/mi13040518.

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The flexure hinge is a kind of micro-displacement adjustment device with application prospects because of its high displacement resolution, positioning accuracy and repeatability. In this study, a micro-displacement worktable with four degrees of freedom (X→, Z→, X︵, Z︵) was designed. The micro-displacement worktable was composed of three different flexure hinges. The adjustment ranges and adjustment accuracy of flexure hinges in terms of their respective degrees were improved. The micro-displacement worktable performance was examined by FEA (Finite Element Method). The maximum displacement that was adjusted in X→ and Z→ was 1.67 µm and 1.74 µm. The maximum angle adjusted in the X︵ and Z︵ direction was 14.90° and 18.58°. A test platform was developed for micro-displacement worktable performance tests. The simulation results showed a good agreement with the experimental results.

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Qu, Cai Hong, Wei Han, and Yan Ming Wang. "Analysis of Fatigue for Mental Bellows Based on ANSYS." Advanced Materials Research 1044-1045 (October 2014): 910–13. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.910.

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The fatigue analysis of the mental bellows had been analyzed. The fatigue tests were designed based on orientation displacement Compared the result of analysis on ANSYS with the result of experiment, the method of fatigue analysis is reliable. Furthermore, an important suggestion should be made that the orientation displacement should be reduced when the mental bellows was usedKeyword: fatigue analysis; mental bellows; ANSYS

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Zhu, Xuli, Shanshan Ma, Haidong Huang, Xiaodong Wang, and Guirong Teng. "Displacement Analysis on Plane Stress Problems." Journal of Physics: Conference Series 2285, no. 1 (June 1, 2022): 012031. http://dx.doi.org/10.1088/1742-6596/2285/1/012031.

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Abstract The vertical z direction displacement component and its effect are not considered in the displacement analysis of the plane stress problems currently, and it may cause misunderstanding of the problems. The plane stress problems are three-dimensional problems actually because the strains are three-dimensional. The relationships among stress, strain and displacement of plane stress problems were analyzed in three-dimensional space based on the basic theory of elasticity in this paper. According to the characteristic constraints of the plane stress problems, the displacement expressions in three directions were derived. The displacement in the plane consists of the integral of the plane strain in the x-y plane and the independent function of the z-direction. Under the condition that the plane stress problem is strictly satisfied, the first stress invariant should be linearly distributed in the plane, and the displacement in the z direction is the product of the x, y related linear function and z.

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Ahmed, Mohd, Devinder Singh, Saeed AlQadhi, and Majed A. Alrefae. "Mesh Free Radial Point Interpolation Based Displacement Recovery Techniques for Elastic Finite Element Analysis." Mathematics 9, no. 16 (August 10, 2021): 1900. http://dx.doi.org/10.3390/math9161900.

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The study develops the displacement error recovery method in a mesh free environment for the finite element solution employing the radial point interpolation (RPI) technique. The RPI technique uses the radial basis functions (RBF), along with polynomials basis functions to interpolate the displacement fields in a node patch and recovers the error in displacement field. The global and local errors are quantified in both energy and L2 norms from the post-processed displacement field. The RPI technique considers multi-quadrics/gaussian/thin plate splint RBF in combination with linear basis function for displacement error recovery analysis. The elastic plate examples are analyzed to demonstrate the error convergence and effectivity of the RPI displacement recovery procedures employing mesh free and mesh dependent patches. The performance of a RPI-based error estimators is also compared with the mesh dependent least square based error estimator. The triangular and quadrilateral elements are used for the discretization of plates domains. It is verified that RBF with their shape parameters, choice of elements, and errors norms influence considerably on the RPI-based displacement error recovery of finite element solution. The numerical results show that the mesh free RPI-based displacement recovery technique is more effective and achieve target accuracy in adaptive analysis with the smaller number of elements as compared to mesh dependent RPI and mesh dependent least square. It is also concluded that proposed mesh free recovery technique may prove to be most suitable for error recovery and adaptive analysis of problems dealing with large domain changes and domain discontinuities.

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Zhang, Wei Zhong, Yao Ji Li, Xiao Shuang Li, and Qin Rong Kang. "Forecasting of Landslide Displacement Based on Exponential Smoothing and Nonlinear Regression Analysis." Applied Mechanics and Materials 353-356 (August 2013): 1101–5. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1101.

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The landslide forecasting study is one of the hot problems in landslide research. Based on the actual observation data, the exponential smoothing and nonlinear regression analysis are integrated. According to the criteria of displacement and displacement velocity, the dynamic track prediction about the slippage time of landslide is introduced. In light of the practical landslide conditions, a model was established for the special displacement of some monitoring points£¬ and the prediction based on this model was obtained with high accuracy. Therefore, the method can be used in practical engineering.

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Aschheim, Mark. "Seismic Design Based on the Yield Displacement." Earthquake Spectra 18, no. 4 (November 2002): 581–600. http://dx.doi.org/10.1193/1.1516754.

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Although seismic design traditionally has focused on period as a primary design parameter, relatively simple arguments, examples, and observations discussed herein suggest that the yield displacement is a more stable and more useful parameter for seismic design. The stability of the yield displacement is illustrated with four detailed examples, consisting of moment-resistant frame buildings. Each frame is designed to limit roof drift for a specific ground motion using an “equivalent” SDOF model in conjunction with Yield Point Spectra. The effectiveness of the simple design method is established by nonlinear dynamic analysis. Yield displacements were stable and consistent while the fundamental periods of vibration (and lateral stiffness) required to meet the performance objective differed substantially.

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Bin Shukri, Ahmad Azim, and Mohd Zamin Jumaat. "Tension Stiffening Analysis for Cyclically Loaded RC Beams." Applied Mechanics and Materials 567 (June 2014): 517–21. http://dx.doi.org/10.4028/www.scientific.net/amm.567.517.

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Ductility is an important aspect of cyclically loaded reinforced concrete (RC) structures. One of the method that can be used to measure the ductility of an RC structure is the moment-curvature approach. However, due to it being a strain-based approach it cannot be used to directly simulate behaviour associated with interface displacement that occur when an RC member is cracked. This leads to dependency on empirical values, which imposes limitations on how the moment-curvature approach can be used. In recent years a new displacement based method for measuring ductility has been developed, and can simulate the interface displacement behaviours through the use of partial-interaction theory and shear friction theory. This paper aims to extend the general tension stiffening analysis of the displacement-based approach to allow for cyclic loading. The tension-stiffening analysis was then validated against experimental results and the results were found to agree fairly.

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