In the automotive industry, numerical analysis is often used as the design support and makes a great contribution In terms of brake disks, however, it is still difficult to predict heat fatigue of brake disks by numerical approach It is because cracks and textures of brake rotors result from interaction between temperature field, stress field and fluid field and their unsteadiness. In this discourse, we develop necessary methods to compute braking effects as mput heat flux for further thermo-fluid coupled computation

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A nonlinear finite element model of total hip arthroplasty has been developed from lower limbs CT images of 54 years old male Four types of falling configurations (FC) are assigned at hip impact of 3 9BW with different loading directions and boundary conditions The results showed different fracture sites in each configuration Minimum fractures are predicted in line at the proximal canal femur in FC1 and FC2 While in FC3 and FC4, the fractures are observed at tronchanteric region

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[in Japanese]

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In patient-specific arterial fluid-structure interaction (FSI) computations, the image-based artenal geometry comes from a configuration that is not stress-free We present a method for estimation of element-based zero-stress (ZS) state The method has three main components, and we present one of them. An element-based mappmg between the artenal and straight-tube configuration is used for mappmg from the artenal configuration to the straight-tube configuration, and for mapping the estimated ZS state of the straight tube back to the artenal configuration, to be used as the initial guess for the iterative method that matches the image-based target shape We present a set of test computations to show how the method works

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[in Japanese]

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[in Japanese]

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The important role of harbor loading equipments has been recognized again through the large-scale earthquake disaster m recent years The earthquake-proof capacity of the gantry crane, with the reduced scale model is overviewed, and an analytical model reproduced this vibration examination result Through this analysis, mcludmg the effect of dynamic damper, the decrease of vibration level is confirmed

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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The finite element method is commonly used to simulate sheet forming processes to improve machining accuracy For a sheet forming process, conventional shell element is not sufficient to simulate the complex behaviors, such as, the deformations of the sheet and the contact forces at the sheet-die interface In this work, we propose an approach that accounts for the changes of the stress distribution along through the thickness We introduce a displacement variation along the thickness direction and propose the structural element in which the distribution of a contact force and a deformation in the thickness direction is considered.

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The recourse to numerical techniques in plasticity has become a crucial point to speed up computational time The nonlinear behavior of material forces the use of a small step size in order to keep the accuracy of the solution and the stability of the algorithm Return Mapping technique [1], here adapted to the Subloading Surface model [2], guarantees a quadratic convergence rate on the correct solution even in a large step analysis, justifying its use especially where a large number of iterations is required (cyclic plasticity problems, etc) and reducing the computing effort

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Drop Impact Simulation, Acceleration, Distortion, Explicit FEM, LS-DYNAAt first, in this paper, we confirmed the validity of the drop impact simulation technology of the package air conditioning outdoor unit by consistency having been observed in analysis results and test results of the acceleration of the compressor and motor Then, we performed narrowing of the packing proposals by comparing results of the drop impact analyses of the package air conditioning outdoor unit packed in various packing proposals As a result, a prototype test with the narrowed-down packing proposal that reduced the consumption of the EPS buffer material by 21% passed the standard at one time, and this greatly contributed to the efficiency and completeness improvement of the development Finally, we introduced together that the packing based on the simulation results of this paper won the Japan Star Award of Japan Packing Contest 2013

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