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3D parametric deformable models have been used to extract volumetric object boundaries and they generate smooth boundary surfaces as results. However, in some segmentation cases, such as cerebral cortex with complex folds and creases, and human lung with high curvature boundary, parametric deformable models often suffer from over-smoothing or decreased mesh quality during model deformation. To address...
The gap between the rotor and the stator of the external circulation piston pump has an important impact on pump efficiency and operation reLiabiLity. Shaft and rotor are important parts of the external circulation piston pump. The gap value is determined by the shaft flexural deformation. According to the force of the rotor and shaft, the relevant module of the software ANSYS was appLied to give...
In this paper, design process and structure of the high-speed train bogie parameters determination test bench is introduced. The virtual prototype for the test bench is established by SolidWorks, and through the finite element analysis of key components of the test bench, such as the gantry framework and the single 6 degree of freedom loading system assembly, it shows that performance indexes of key...
Grasping a deformable object instantaneously requires maintaining equilibrium of its pre- and post-deformed shapes using the same set of forces. This paper studies the type of grasps generated by squeezing a planar object with two fingers. It is shown that the success of such a grasp is independent of the applied forces in the case of small deformation. Numerical algorithms are introduced to compute...
Aiming at pounding of expansion joint in multiple continuous girder curved ramp bridge, the paper builds space dynamic model of a curved ramp bridge with expansion joint, and simulation of pier column, beam, bearing and expansion joint. Using nonlinear time history analysis, the paper demonstrates expansion joint's effect on dynamic characteristics of a curved ramp bridge in four different theoretical...
In order to avoid the serious accident in the temporary work zone and in the mobile maintenance process, the collision performance is studied to the absorption unite, making the safety control in the highway work zone where there is a lot of mobile maintenance vehicle. The installment has good absorption energy ability, thus protects the passenger to be not injured or to reduce the injury the degree...
The Occupant Protection of Vehicle Side Impact (GB20071-2006) is a compulsive and executable standard that all M1 and N1 style vehicle must obey to. Simulation for vehicle side impact is one of important test methods to study vehicle impact safety. And the model of moving deformable barrier (MDB) is the basic tool of the test. According to the requirements in regulation for the performance and test...
Sensitivity analysis and optimization based on the combination of Pro/MECHANICA and ANSYS are applied to designing of the connecting rod of LJ276M electronic gasoline engine. The maximum stress of connecting rod on the largest compression condition is reduced by 4.9% after the optimization is applied, static intension safety coefficient is increased by 5.4% and mass of connecting rod is also reduced.
The value of the chassis gap has an important impact on driving safety and handling stability of vehicle. Focusing on the efficiency and accuracy of the detection equipment for testing chassis gap, the controlling performance influenced by chassis gap and a novel tester model is presented. The finite element analysis is adopted to ensure the reliability of the tester proposed the Coulomb criterion...
An ANSYS analysis and computation of the stress distribution in circular AT cut quartz wafer was carried out, when quartz wafer was subjected to a force along its diameter which was parallel to the x axis, the force-frequency coefficient of quartz resonator were tested by using plated electrode on different region. Experiment proves that the result of ANSYS analysis is nearly consistent with experiment,...
A new topology optimization method for designing thermomechanical compliant actuators using meshless methods is presented. The meshless method is employed to discretize the design domain and the bulk density field, which can avoid the undesirable mesh distortion when the standard finite element method (FEM) is applied. The method for imposing boundary conditions in the meshless method is discussed...
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