Thematische Bibliographien / Torsion stabilizer

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Auswahl der wissenschaftlichen Literatur zum Thema „Torsion stabilizer“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 5. Februar 2022

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Zeitschriftenartikel zum Thema "Torsion stabilizer"

Giannakis, Efstratios, Elli Sivena, Michail Malikoutsakis, and Georgios Savaidis. "Fatigue design and testing of automotive stabilizer bars." MATEC Web of Conferences 188 (2018): 02014. http://dx.doi.org/10.1051/matecconf/201818802014.

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Stabilisers are components of the axle suspension system of cars trucks, trains and other moving road vehicles that connect the movement of the two sides of the suspension (right and left) to keep the vehicle levelled. Stabilizers experience bending and torsion at operation. In particular, their arms experience bending while the main body mainly torsional loading. In both cases, the highly stressed area is the surface, where the maximum tensile and shear stresses are acting. High strength steels and special treatments, thermal and/or mechanical, are used for the stabilisers’ manufacturing. The present study deals with necessary input data for fatigue life assessments based on the FKM guideline [1]. In addition, fatigue tests are conducted to calculate the stress-life curves of two different manufacturing processes.

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Geonea, I., N. Dumitru, A. Rosca, N. Craciunoiu, L. Racila, and C. Copilusi. "Computation of a torsion spring stabilizer bar rigidity and fatigue resistance." IOP Conference Series: Materials Science and Engineering 568 (September 17, 2019): 012013. http://dx.doi.org/10.1088/1757-899x/568/1/012013.

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Rakitikul, Waleepan, and Piyarat Nimmanpipug. "Degree of Esterification and Gelling Properties of Pectin Structure in Coffee Pulp." Key Engineering Materials 675-676 (January 2016): 11–14. http://dx.doi.org/10.4028/www.scientific.net/kem.675-676.11.

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Pectin is a high value functional food ingredient widely used as a gelling agent and stabilizer. The chemical structure of pectin has been the subject of scientific investigations for decades. Coffee producers remove beans; the other source of pectin, from coffee cherries is thrown away. Our study showed that pectin extracted from coffee pulp has high degree of esterification and methoxyl content of 93.75% and 7.87 respectively, which indicated good gelation properties. Nevertheless, here we were interested in the primary structure of pectin which is a complex polysaccharides that contains 1, 4-linked a-D-galactosyluronic acid (GalpA) residue. A theoretical dimension, density functional theory (DFT) with Generalized Gradient Approximation (GGA)/ BLYP functions, was utilized to study methylester substitution in pectin model compounds. For further discussion, the use of a COSMO model in different solvent showed the significant results in the difference torsion angle and HOMO diagram.

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Hu, Lin, Shengyong Fang, and Jia Yang. "Study of the Vehicle Controllability and Stability Based on Multi-body System Dynamics." Open Mechanical Engineering Journal 8, no. 1 (2014): 865–71. http://dx.doi.org/10.2174/1874155x01408010865.

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In this paper, the 135 Degree of Freedom multi-body system dynamics model was built by using the software ADAMS/CAR, according to the requests of Chinese standards, and the simulating research about 6 performances of automotive controllability and stability were carried on. Based on the simulating results, some automobile’s performance, such as return-ability, slalom-ability and steering efforts-ability, were excellent, but some other performances, such as steady state cornering ability, steering wheel angle pulse input response ability and steering wheel angle step input response ability, were not satisfied. In order to improve the performance of the automobile, three parameters, i.e. the automotive mass, the load of front axis and the torsion stiffness of rear stabilizer anti-roll bar, were selected as the optimized objects. Within the variety range of the parameters, the multi-body system of the automobile was optimized. Automotive controllability and stability is improved obviously based on the simulating results of the optimized multibody system.

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Planat, Michel. "Quantum computing thanks to Bianchi groups." EPJ Web of Conferences 198 (2019): 00012. http://dx.doi.org/10.1051/epjconf/201919800012.

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It has been shown that the concept of a magic state (in universal quantum computing: uqc) and that of a minimal informationally complete positive operator valued measure: MIC-POVMs (in quantum measurements) are in good agreement when such a magic state is selected in the set of non-stabilizer eigenstates of permutation gates with the Pauli group acting on it [1]. Further work observed that most found low-dimensional MICs may be built from subgroups of the modular group PS L(2, Z) [2] and that this can be understood from the picture of the trefoil knot and related 3-manifolds [3]. Here one concentrates on Bianchi groups PS L(2, O10) (with O10 the integer ring over the imaginary quadratic field) whose torsion-free subgroups define the appropriate knots and links leading to MICs and the related uqc. One finds a chain of Bianchi congruence n-cusped links playing a significant role [4].

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Boughton, Philip, Y. Chen, C. Thompson, G. Roger, Jari Hyvarinen, and Andrew Ruys. "Development of a Bioabsorbable Glass-Reinforced-Glass Intra-Osseous Scaffold for Fracture Healing." Journal of Biomimetics, Biomaterials and Tissue Engineering 9 (January 2011): 81–91. http://dx.doi.org/10.4028/www.scientific.net/jbbte.9.81.

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Intramedullary (IM) nails are routinely used to stabilize long bone fractures. They can however lead to stress shielding, pain, migration, obstruct hematopoietic tissue, become a loci for infection, and require subsequent surgical retrieval. Novel intra-osseous scaffold (IOS™) prototypes for fracture healing have been developed to function as a regenerative scaffold to enhance callous formation under mechanically stabilized conditions then resorb. Prototype fixation pins and rod systems were formed from glass-reinforced-glass. Flexion, torsion and shear tests were performed to evaluate the composite pins and rods. A modular rod design was successfully deployed and dilated while in a deformable state. When fitted and gripping the intramedullary canal then set in a rigid state. An obliquely sectioned ovine femur was used as a long bone fracture model for deployment and mechanical verification. Flexural support provided by the intramedullary scaffold was superior to multiple k-wire fixation, while the k-wire approach was more stabilizing under torsional loads. Glass reinforced glass samples were mechanically tested after soaking for up to 4 weeks in saline. Strength and modulus of the composite was reduced to approximately 25% of initial values after 2 weeks.

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Read, R. A., R. Day, and M. J. Thomson. "The Comparative Strengths of Orthopaedic Staples Versus a 2.7 mm T Plate in the Stabilisation of Distal Radial Osteotomies." Veterinary and Comparative Orthopaedics and Traumatology 11, no. 02 (1998): 100–104. http://dx.doi.org/10.1055/s-0038-1632618.

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SummaryDistal radial osteotomies were performed in 20 limbs from ten cadaver specimens. Ten bones were stabilised with two × 1.6 mm surgical bone staples and ten were stabilised with a 2.7 mm T platea. The radii were removed and the osteotomies were biomechanically tested in torsion initially, and then to failure in bending. Statistically significant differences were not found between the two types of repair in torsional stiffness, bending stiffness, deflection to failure in bending, or load to failure in bending. Orthopaedic staples are a simple, cost-effective alternative to bone plates for stabilisation of distal radial osteotomies.Bilateral distal radial osteotomies were created in dog cadavers and then repaired with either two bone staples or a 2.7 mm T plate. The limbs were then tested in vitro to compare the relative strengths of the repairs in torsion and bending. Statistically significant differences were not found between the two methods of stabilisation.

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Perez, Mireya, Mohammad Hossain, Edward Silverman, Randall Fitch, Ryan Wicker, and Michelle Meyer. "Effect of headless compression screw on construct stability for centre of rotation and angulation-based levelling osteotomy." Veterinary and Comparative Orthopaedics and Traumatology 30, no. 04 (2017): 1–5. http://dx.doi.org/10.3415/vcot-16-09-0136.

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Summary Objective: To compare the biomechanical properties of bone and implant constructs when used for the centre of rotation and angulation (CORA) based levelling osteotomy, with and without implantation of a trans-osteotomy headless compression screw tested under three-point flexural and torsional forces; thereby determining the contribution of a trans-osteotomy headless compression screw with regards to stability of the construct. Methods: Experimental biomechanical study utilizing 12 pairs of cadaveric canine tibias. Using the CORA based levelling osteotomy (CBLO) procedure, the osteotomy was stabilized with either a standard non-locking CBLO bone plate augmented with a headless compression screw (HCS) or a CBLO bone plate alone. Tibial constructs were mechanically tested in three-point craniocaudal flexural testing or in torsion. Results: In three-point flexural testing, the difference between the two constructs was not significant. In torsion, the difference in the angle of failure between constructs with a HCS (48.46°) and constructs without a HCS (81.65°) was significant (p = 0.036). Maximum torque achieved by constructs with a HCS (21.7 Nm) was greater than those without (18.7 Nm) (p = 0.056). Stiffness differences between both groups in torsion and bending were not significant. Use of a HCS did increase the stability of the CBLO construct in torsional testing, but not in flexural testing.

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Bai, Hua, and Sen Hua Huang. "Research on the Aerodynamic Measures Impact on Flutter Stability of Steel Truss Suspension Bridge." Advanced Materials Research 791-793 (September 2013): 378–81. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.378.

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The flutter stability of the steel truss suspension bridge is hard to reach the requirement of the wind resisting stability when lacks the torsional stiffness. This paper discusses the influence of aerodynamic measure combination, such as central stabilizer, air director enclosed anti-collision bar and so on, towards the flutter stability of steel truss through the wind tunnel experiment of the bridge of Liu Jia gorge. The result shows: the effect of using both the upper and lower stabilized plate is better than separated used it. when sectionalized dispose upper stabilized plate, the flutter critical wind speed of attack angle will decrease rapidly. Outlaying the horizontal guide plate is better than internally installed; The flutter stability of different attack angle tend to be balanced by widening the horizontal guide plate. The anti-collision bar can be functionalized as the central stabilizer by heightening and enclosing, and effectively increase the critical wind speed of different attack angles of the high truss suspension bridge.

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DeSmidt, H. A., K. W. Wang, and E. C. Smith. "Coupled Torsion-Lateral Stability of a Shaft-Disk System Driven Through a Universal Joint." Journal of Applied Mechanics 69, no. 3 (2002): 261–73. http://dx.doi.org/10.1115/1.1460907.

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Understanding the instability phenomena of rotor-shaft and driveline systems incorporating universal joints is becoming increasingly important because of the trend towards light-weight, high-speed supercritical designs. In this paper, a nondimensional, periodic, linear time-varying model with torsional and lateral degrees-of-freedom is developed for a rotor shaft-disk assembly supported on a flexible bearing and driven through a U-joint. The stability of this system is investigated utilizing Floquet theory. It is shown that the interaction between torsional and lateral dynamics results in new regions of parametric instability that have not been addressed in previous investigations. The presence of load inertia and misalignment causes dynamic coupling of the torsion and lateral modes, which can result in torsion-lateral instability for shaft speeds near the sum-type combinations of the torsion and lateral natural frequencies. The effect of angular misalignment, static load-torque, load-inertia, lateral frequency split, and auxiliary damping on the stability of the system is studied over a range of shaft operating speeds. Other than avoiding the unstable operating frequencies, the effectiveness of using auxiliary lateral viscous damping as a means of stabilizing the system is investigated. Finally, a closed-form technique based on perturbation expansions is derived to determine the auxiliary damping necessary to stabilize the system for the least stable case (worst case).

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