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Journal articles on the topic 'Shape Control'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 March 2023

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1

Katie, Lu. "Silver Nanoparticles: Reducing Environmental Toxicity Through Shape Control." ESSENCE International Journal for Environmental Rehabilitation and Conservation 9, no. 1 (August 15, 2018): 14–22. http://dx.doi.org/10.31786/09756272.18.9.1.103.

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2

Nyirő -Kósa, Ilona, Dorottya Csákberényi Nagy, and Mihály Pósfai. "Size and shape control of precipitated magnetite nanoparticles." European Journal of Mineralogy 21, no. 2 (April 22, 2009): 293–302. http://dx.doi.org/10.1127/0935-1221/2009/0021-1920.

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3

FREEMANTLE, MICHAEL. "NANOPARTICLE SHAPE CONTROL." Chemical & Engineering News 79, no. 49 (December 3, 2001): 10. http://dx.doi.org/10.1021/cen-v079n049.p010a.

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4

Koconis, David B., Låszló P. Kollår, and George S. Springer. "Shape Control of Composite Plates and Shells with Embedded Actuators. II. Desired Shape Specified." Journal of Composite Materials 28, no. 5 (March 1994): 459–82. http://dx.doi.org/10.1177/002199839402800504.

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The changes in shapes of fiber-reinforced composite beams, plates and shells affected by embedded piezoelectric actuators were investigated. An analytical method was developed to determine the voltages needed to achieve a specified desired shape. The method is formulated on the basis of mathematical models using two-dimensional, linear, shallow shell theory including transverse shear effects which are important in the case of sandwich construction. The solution technique is a minimization of an error function which is a measure of the difference between the deformed shape caused by the application of voltages and the desired shape. A computationally efficient, user-friendly computer code was written which is suitable for performing the numerical calculations. The code, designated as SHAPE2, gives the voltages needed to achieve specified changes in shape. To validate the method and the computer code, results generated by the code were compared to existing analytical and experimental results. The predictions provided by the SHAPE2 code were in excellent agreement with the results of the other analyses and data.

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5

Jensen, Robert E. "Control of mitochondrial shape." Current Opinion in Cell Biology 17, no. 4 (August 2005): 384–88. http://dx.doi.org/10.1016/j.ceb.2005.06.011.

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6

Bikeev, E. V., M. G. Matylenko, D. O. Shendalev, Yu V. Vilkov, F. K. Sin’kovsky, Y. V. Kolovskiy, and A. I. Kuklina. "Spacecraft reflector shape control." IOP Conference Series: Materials Science and Engineering 734 (January 29, 2020): 012031. http://dx.doi.org/10.1088/1757-899x/734/1/012031.

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7

Deckelnick, Klaus, Philip J. Herbert, and Michael Hinze. "A novel W^1,∞ approach to shape optimisation with Lipschitz domains." ESAIM: Control, Optimisation and Calculus of Variations 28 (2022): 2. http://dx.doi.org/10.1051/cocv/2021108.

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This article introduces a novel method for the implementation of shape optimisation with Lipschitz domains. We propose to use the shape derivative to determine deformation fields which represent steepest descent directions of the shape functional in the W1,∞-topology. The idea of our approach is demonstrated for shape optimisation of n-dimensional star-shaped domains, which we represent as functions defined on the unit (n − 1)-sphere. In this setting we provide the specific form of the shape derivative and prove the existence of solutions to the underlying shape optimisation problem. Moreover, we show the existence of a direction of steepest descent in the W1,∞− topology. We also note that shape optimisation in this context is closely related to the ∞−Laplacian, and to optimal transport, where we highlight the latter in the numerics section. We present several numerical experiments in two dimensions illustrating that our approach seems to be superior over a widely used Hilbert space method in the considered examples, in particular in developing optimised shapes with corners.

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8

ABELS, ARTUR, and MAARJA KRUUSMAA. "SHAPE CONTROL OF AN ANTHROPOMORPHIC TAILORING ROBOT MANNEQUIN." International Journal of Humanoid Robotics 10, no. 02 (June 2013): 1350002. http://dx.doi.org/10.1142/s0219843613500023.

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In this paper, we describe a new type of humanoid robot designed for made-to-measure garment industry — a shape-changing robotic mannequin. This mannequin is designed to imitate body shapes of different people. The main emphasis of this paper is on modeling and shape-optimization algorithm used to adjust mannequins shape to resemble the shape of any given person. We represent the whole procedure of adjusting the mannequin to the body shapes of real people. Finally, we provide the estimate of the mannequin's model precision and suitability of the proposed solutions for made-to-measure tailoring application. The results show that the mannequin and the optimization methods are sufficiently precise for the requirements in tailoring industry.

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9

Tohgo, Keiichiro, Yuki Tochigi, Hiroyasu Araki, and Yoshinobu Shimamura. "OS17-1-2 Deformation and mechanical response of shape-control plate using NiTi shape memory alloy wire." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2007.6 (2007): _OS17–1–2——_OS17–1–2—. http://dx.doi.org/10.1299/jsmeatem.2007.6._os17-1-2-.

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10

Yang, Li Po, and Bing Qiang Yu. "Shape Detecting and Shape Control of Cold Rolling Strip." Advanced Materials Research 311-313 (August 2011): 902–5. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.902.

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Based on the shape detecting principle and the DSP (Digital Signal Processing) technology, a high-precision shape detecting system of cold rolling strip is developed to meet industrial application. It was successfully used in Angang 1250 mm HC 6-high reversible cold rolling mill. The precision of shape detecting was 0.2 I, the shape deviation was controlled within 6 I after the close loop shape control was input.

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11

Lee, Jenn Hua, and Shi Nine Yang. "Shape preserving and shape control with interpolating Bézier curves." Journal of Computational and Applied Mathematics 28 (December 1989): 269–80. http://dx.doi.org/10.1016/0377-0427(89)90339-7.

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12

Tanveer, Muhammad, and Kwang-Yong Kim. "Effects of Bridge-Shaped Microchannel Geometry on the Performance of a Micro Laminar Flow Fuel Cell." Micromachines 10, no. 12 (November 27, 2019): 822. http://dx.doi.org/10.3390/mi10120822.

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A laminar flow micro fuel cell comprising of bridge-shaped microchannel is investigated to find out the effects of the cross-section shape of the microchannel on the performance. A parametric study is performed by varying the heights and widths of the channel and bridge shape. Nine different microchannel cross-section shapes are evaluated to find effective microchannel cross-sections by combining three bridge shapes with three channel shapes. A three-dimensional fully coupled numerical model is used to calculate the fuel cell’s performance. Navier-Stokes, convection and diffusion, and Butler-Volmer equations are implemented using the numerical model. A narrow channel with a wide bridge shape shows the best performance among the tested nine cross-sectional shapes, which is increased by about 78% compared to the square channel with the square bridge shape.

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13

Arguillère, Sylvain, Emmanuel Trélat, Alain Trouvé, and Laurent Younès. "Shape deformation and optimal control." ESAIM: Proceedings and Surveys 45 (September 2014): 300–307. http://dx.doi.org/10.1051/proc/201445031.

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14

Filankembo, A., and M. P. Pileni. "Shape control of copper nanocrystals." Applied Surface Science 164, no. 1-4 (September 2000): 260–67. http://dx.doi.org/10.1016/s0169-4332(00)00345-7.

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15

Arcos, Gabriel, Guillermo Montilla, José Ortega, and Marco Paluszny. "Shape control of 3D lemniscates." Mathematics and Computers in Simulation 73, no. 1-4 (November 2006): 21–27. http://dx.doi.org/10.1016/j.matcom.2006.06.001.

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16

Perez, Geronimo, Jefferson Araujo, Paulina Romero, and Guillermo Solorzano. "Shape Control of Fe3O4 Nanoparticles." Microscopy and Microanalysis 26, S2 (July 30, 2020): 2818–19. http://dx.doi.org/10.1017/s1431927620022886.

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17

Kashiwase, Toshio, Masaki Tabata, Kazuo Tsuchiya, and Sadao Akishita. "Shape Control of Flexible Structures." Journal of Intelligent Material Systems and Structures 2, no. 1 (January 1991): 110–25. http://dx.doi.org/10.1177/1045389x9100200107.

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18

Utku, S., C. P. Kuo, J. A. Garba, and B. K. Wada. "Shape Control of Inflatable Reflectors." Journal of Intelligent Material Systems and Structures 6, no. 4 (July 1995): 550–56. http://dx.doi.org/10.1177/1045389x9500600412.

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19

PAN, DENGYU, SHUYUAN ZHANG, GONGPU LI, YIQING CHEN, and J. G. HOU. "SHAPE CONTROL OF Bi2S3 NANOPARTICLES." International Journal of Nanoscience 01, no. 02 (April 2002): 187–93. http://dx.doi.org/10.1142/s0219581x02000140.

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Bi 2 S 3 nanocrystals with different shapes were synthesized via a simple solventothermal route. Nanorods and nanotubes can be obtained by changing reaction temperature. In the presence of surfactant, hollow nanospheres can be produced. The nanocrystals were characterized by X-ray powder diffraction and transmission electron microcopy. The growth mechanisms were discussed.

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20

Peng, Xiaogang, Liberato Manna, Weidong Yang, Juanita Wickham, Erik Scher, Andreas Kadavanich, and A. P. Alivisatos. "Shape control of CdSe nanocrystals." Nature 404, no. 6773 (March 2000): 59–61. http://dx.doi.org/10.1038/35003535.

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21

Poudyal, Narayan, Girija S. Chaubey, Chuan-bing Rong, and J. Ping Liu. "Shape control of FePt nanocrystals." Journal of Applied Physics 105, no. 7 (April 2009): 07A749. http://dx.doi.org/10.1063/1.3077210.

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22

Ramirez, E., L. Eradès, K. Philippot, P. Lecante, and B. Chaudret. "Shape Control of Platinum Nanoparticles." Advanced Functional Materials 17, no. 13 (August 2, 2007): 2219–28. http://dx.doi.org/10.1002/adfm.200600633.

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23

Renardy, Michael. "Shape Control by Collinear Actuators." Archive for Rational Mechanics and Analysis 156, no. 3 (February 1, 2001): 231–40. http://dx.doi.org/10.1007/s002050000120.

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24

Sarfraz, Muhammad. "Shape Control & Designing Objects." IFAC-PapersOnLine 51, no. 30 (2018): 316–22. http://dx.doi.org/10.1016/j.ifacol.2018.11.312.

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25

Donovan, Brian R., Valentina M. Matavulj, Suk-kyun Ahn, Tyler Guin, and Timothy J. White. "All-Optical Control of Shape." Advanced Materials 31, no. 2 (November 12, 2018): 1805750. http://dx.doi.org/10.1002/adma.201805750.

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26

FUKUDA, Masatoshi, Akira TODOROKI, Yoshihiro MIZUTANI, and Yoshiro SUZUKI. "Shape control and stiffness control of partially flexible CFRP by using shape memory alloy." Proceedings of the Materials and Mechanics Conference 2016 (2016): PS—19. http://dx.doi.org/10.1299/jsmemm.2016.ps-19.

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27

Chandra, Ramesh. "Active shape control of composite blades using shape memory actuation." Smart Materials and Structures 10, no. 5 (October 1, 2001): 1018–24. http://dx.doi.org/10.1088/0964-1726/10/5/318.

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28

Matunag, Saburo, Iljic Thomas, and Yohei Tanaka. "4116 Morphable Beam Shape Characteristics and Its Shape Control Method." Proceedings of the JSME annual meeting 2007.5 (2007): 377–78. http://dx.doi.org/10.1299/jsmemecjo.2007.5.0_377.

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29

Bodaghi, M., A. R. Damanpack, M. M. Aghdam, and M. Shakeri. "Active shape/stress control of shape memory alloy laminated beams." Composites Part B: Engineering 56 (January 2014): 889–99. http://dx.doi.org/10.1016/j.compositesb.2013.09.018.

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30

Jung, M. N., S. Y. Ha, H. S. Kim, H. J. Ko, H. Ko, W. H. Lee, D. C. Oh, Y. Murakami, T. Yao, and J. H. Chang. "The Shape Control of ZnO Based Nanostructures." Journal of Nanoscience and Nanotechnology 6, no. 11 (November 1, 2006): 3628–32. http://dx.doi.org/10.1166/jnn.2006.17996.

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Tetrapod-shape ZnO nanostructures are formed on Si substrates by vapor phase transportation method. The effects of two important growth parameters, growth temperature and VI/II ratio, are investigated. The growth temperature is varied in the range from 600 °C to 900 °C to control the vapor pressure of group II-element and the formation process of nanostructures. VI/II ratio was changed by adjusting the flux of carrier gas which affects indirectly the supplying rate of group VI-element. From the scanning electron microscopy (SEM), systematic variation of shape including cluster, rod, wire and tetrapod was observed. ZnO tetrapods, formed at 800 °C under the carrier gas flux of 0.5 cc/mm2 min, show considerably uniform shape with 100 nm thick and 1 ∼ 1.5 μm long legs. Also stoichiometric composition (O/Zn ∼ 1) was observed without any second phase structures. While, the decrease of growth temperature and the increase of carrier gas flux, results in the irregular shaped nanostructures with non-stoichiometric composition. The excellent luminescence properties, strong excitonic UV emission at 3.25 eV without deep level emission, indicate that the high crystalline quality tetrapod structures can be formed at the optimized growth conditions.

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31

Koconis, David B., Låszló P. Kollår, and George S. Springer. "Shape Control of Composite Plates and Shells with Embedded Actuators. I. Voltages Specified." Journal of Composite Materials 28, no. 5 (March 1994): 415–58. http://dx.doi.org/10.1177/002199839402800503.

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The changes in shapes of fiber-reinforced composite beams, plates and shells affected by embedded piezoelectric actuators were investigated. An analytical method was developed which can be used to calculate the changes in shapes for specified applied voltages to the actuators. The method is formulated on the basis of mathematical models using two-dimensional, linear, shallow shell theory including transverse shear effects which are important in the case of sandwich construction. Solutions to the governing equations were obtained via the Ritz method. A computationally efficient computer code with a user-friendly interface was written which is suitable for performing the numerical calculations. The code, designated as SHAPE1, provides the change in shape for specified applied voltages. To validate the method and the computer code, results generated by the code were compared to existing analytical and experimental results and to test data obtained during the course of the present investigation. The predictions provided by the SHAPE1 code were in excellent agreement with the results of the other analyses and data.

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32

Yao, Guo-Feng, Xue-Fei Gao, and Su-Huan Chen. "Modal control in the optimal shape control and the shape control research of a paraboloid antenna under different stimulations." Smart Materials and Structures 14, no. 1 (December 8, 2004): 191–96. http://dx.doi.org/10.1088/0964-1726/14/1/019.

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33

Shon, Sudeok, Alan S. Kwan, and Seungjae Lee. "Shape control of cable structures considering concurrent/sequence control." Structural Engineering and Mechanics 52, no. 5 (December 10, 2014): 919–35. http://dx.doi.org/10.12989/sem.2014.52.5.919.

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34

Williford, John-Michael, Jose Luis Santos, Rishab Shyam, and Hai-Quan Mao. "Shape control in engineering of polymeric nanoparticles for therapeutic delivery." Biomaterials Science 3, no. 7 (2015): 894–907. http://dx.doi.org/10.1039/c5bm00006h.

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35

Yun, Jiyeong, Kyeongtae Jeong, Jongyoung Youn, and Donghoon Lee. "Development of Side Mold Control Equipment for Producing Free-Form Concrete Panels." Buildings 11, no. 4 (April 18, 2021): 175. http://dx.doi.org/10.3390/buildings11040175.

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Free-form concrete panel production requires an increasing amount of manpower because the molds cannot be reused. There are many limitations when it comes to reproducing accurate forms due to the many manual processes. Therefore, the current study developed side mold control equipment that can automatically fabricate molds for free-form concrete panels. The equipment is capable of molding various shapes and sustainable operation. However, there may be errors as it automatically produces various shapes. Therefore, it is necessary to check the errors between manufactured shapes and designed shapes. The shape created using the side mold control equipment showed less than 0.1° error in side angle and ±3 mm error in side length. Therefore, the equipment manufactured a precise shape. Based on the findings of the study, the side mold control equipment will be used to produce accurate shape of free-form concrete panels automatically.

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36

Berrini, Elisa, Bernard Mourrain, Yann Roux, Mathieu Durand, and Guillaume Fontaine. "Geometric Modelling and Deformation for Shape Optimization of Ship Hulls and Appendages." Journal of Ship Research 61, no. 02 (June 1, 2017): 91–106. http://dx.doi.org/10.5957/jsr.2017.61.2.91.

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The precise control of geometric models plays an important role in many domains such as computer-aided geometric design and numerical simulation. For shape optimization in computational fluid dynamics (CFD), the choice of control parameters and the way to deform a shape are critical. In this article, we describe a skeleton-based representation of shapes adapted for CFD simulation and automatic shape optimization. Instead of using the control points of a classic B-spline representation, we control the geometry in terms of architectural parameters. We assure valid shapes with a strong shape consistency control. Deformations of the geometry are performed by solving optimization problems on the skeleton. Finally, a surface reconstruction method is proposed to evaluate the shape's performances with CFD solvers. We illustrate the approach on two problems: the foil of an AC45 racing sail boat and the bulbous bow of a fishing trawler. For each case, we obtained a set of shape deformations and then we evaluated and analyzed the performances of the different shapes with CFD computations.

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37

Hirtler, Lena, Katrin Tschematschar, Franz Kainberger, and Sebastian Röhrich. "Applicability of Semi-Quantitative Evaluation of the Intercondylar Notch." Applied Sciences 11, no. 13 (June 25, 2021): 5921. http://dx.doi.org/10.3390/app11135921.

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The intercondylar notch (IN) can differ in morphology and size, influencing the contained ligaments. For a better understanding of the influence of the IN’s anatomy on knee pathologies, a classification of different shapes was proposed. However, a detailed evaluation of the reliability of these classifications is lacking thus far. In coronal knee MRIs of 330 patients, the IN width was measured and three shapes were calculated to generate objective control results. Notch shapes were classified by two blinded investigators, first without and then with visual assistance to guide the shape classification. The distribution of the three different shapes was as follows: A-shape: n = 43, 13.0%; inverse U-shape: n = 100, 30.3%; Ω-shape: n = 183, 56.7%. The semi-quantitative evaluation distribution was as follows: A-shape: n = 44, 13.3%; inverse U-shape: n = 37, 11.2%; Ω-shape: n = 249, 75%; there was fair (κ = 0.35) agreement compared to that of the control results. The assisted semi-quantitative evaluation distribution was as follows: A-shape: n = 44, 13.3%; inverse U-shape: 103, 31.2%; Ω-shape: n = 183, 55.3%; there was very good (κ = 0.92) agreement compared to that of the control results. In the shape evaluation of the IN, rigid guidelines and visual assistance must be used to ensure reliability. The utilization of visual assistance led to higher inter- and intra-rater agreements in the semi-quantitatively evaluation of the IN shape when compared to those in the classification without visual assistance.

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38

Nabil, Marwa, and Hussien A. Motaweh. "Shape Control of Silica Powder Formation." Journal of Materials Science and Chemical Engineering 07, no. 03 (2019): 49–55. http://dx.doi.org/10.4236/msce.2019.73004.

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39

Teshima, Tsuneo, Kouyuu Abe, Yasubumi Furuya, Minoru Matsumoto, and C. M. Wayman. "Precise Control of Shape Memory Microstage." Journal of Advanced Science 3, no. 4 (1991): 184–87. http://dx.doi.org/10.2978/jsas.3.184.

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40

Buttazzo, Giuseppe, Francesco Paolo Maiale, and Bozhidar Velichkov. "Shape optimization problems in control form." Rendiconti Lincei - Matematica e Applicazioni 32, no. 3 (December 16, 2021): 413–35. http://dx.doi.org/10.4171/rlm/942.

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41

Zhang, S., and A. D. Belegundu. "Mesh Distortion Control in Shape Optimization." AIAA Journal 31, no. 7 (July 1993): 1360–62. http://dx.doi.org/10.2514/3.49077.

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42

Yan, Guang Cai, and Zhao Xia Ma. "Investigation on Line-Shape Control Technology." Applied Mechanics and Materials 166-169 (May 2012): 956–59. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.956.

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The simulation analysis of the cantilever construction process was carried out with the structure analysis software. This paper provides an overview of the geometric control and the overall computation according to actual criterion, taking into account the effect of temperature, concrete shrinkage and creep, pre-stressed tension and so on. The elevation monitoring was carried out by comparing the calculated values with testing data. The analysis and control of the line shape are good to perfect the construction control technology of the closure section, enhance the closure quality and ensure the smooth of entire line shape and the rationality of the main beam internal force.

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43

Liu, Y., S. Poyraz, J. H. Xin, and X. Zhang. "Shape control of novel platinum nanobelts." J. Mater. Chem. A 2, no. 20 (2014): 7152–55. http://dx.doi.org/10.1039/c4ta00043a.

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Novel platinum nanobelts were synthesized using a reverse micelle method for the first time. Morphology control over the shape and size of the nanobelts can be achieved simply by changing the precursor concentration or reaction time.

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44

Holnicki-Szulc, Jan, and Raphael T. Haftka. "Vibration mode shape control by prestressing." AIAA Journal 30, no. 7 (July 1992): 1924–27. http://dx.doi.org/10.2514/3.11159.

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45

Austin, Fred, Michael J. Rossi, William Van Nostrand, Gareth Knowles, and Antony Jameson. "Static shape control for adaptive wings." AIAA Journal 32, no. 9 (September 1994): 1895–901. http://dx.doi.org/10.2514/3.12189.

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46

Travers, Matthew, Julian Whitman, and Howie Choset. "Shape-based coordination in locomotion control." International Journal of Robotics Research 37, no. 10 (March 24, 2018): 1253–68. http://dx.doi.org/10.1177/0278364918761569.

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Highly articulated systems are capable of executing a variety of behaviors by coordinating their many internal degrees of freedom to help them move more effectively in complex terrains. However, this inherent variety poses significant challenges that have been the subject of a great deal of previous work: What are the most effective or most efficient methods for achieving the intrinsic coordination necessary to produce desired global objectives? This work takes these questions one step further, asking how different levels of coordination, which we quantify in terms of kinematic coupling, affect articulated locomotion in environments with different degrees of underlying structure. We introduce shape functions as the analytical basis for specifying kinematic coupling relationships that constrain the relative motion among the internal degrees of freedom for a given system during its nominal locomotion. Furthermore, we show how shape functions are used to derive shape-based controllers (SBCs) that manage the compliant interaction between articulated bodies and the environment while explicitly preserving the inter-joint coupling defined by shape functions. Initial experimental evidence provides a comparison of the benefits of different levels of coordination for two separate platforms in environments with different degrees of inherent structure. The experimental results show that decentralized implementations, where there is relatively little inter-joint coupling, perform well across a spectrum of different terrains but that there are potential benefits to higher degrees of coupling in structured terrains. We discuss how this observation has implications related to future planning and control approaches that actively “tune” their underlying structure by dynamically varying the assumed level of coupling as a function of task specification and local environmental conditions.

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47

Grzelczak, Marek, Jorge Pérez-Juste, Paul Mulvaney, and Luis M. Liz-Marzán. "Shape control in gold nanoparticle synthesis." Chemical Society Reviews 37, no. 9 (2008): 1783. http://dx.doi.org/10.1039/b711490g.

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48

Bertrand, Guillaume H. V., Anatolii Polovitsyn, Sotirios Christodoulou, Ali Hossain Khan, and Iwan Moreels. "Shape control of zincblende CdSe nanoplatelets." Chemical Communications 52, no. 80 (2016): 11975–78. http://dx.doi.org/10.1039/c6cc05705e.

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49

Kruszynska, Marta, Holger Borchert, Jürgen Parisi, and Joanna Kolny-Olesiak. "Synthesis and Shape Control of CuInS2Nanoparticles." Journal of the American Chemical Society 132, no. 45 (November 17, 2010): 15976–86. http://dx.doi.org/10.1021/ja103828f.

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50

Skubi, Kazimer L., and Tehshik P. Yoon. "Shape control in reactions with light." Nature 515, no. 7525 (November 2014): 45–46. http://dx.doi.org/10.1038/515045a.

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