Results 11 to 20 of about 11,657,814 (247)

A continuous/discontinuous Galerkin formulation for a strain gradient-dependent damage model [PDF]

, 2004
The numerical solution of strain gradient-dependent continuum problems has been hindered by continuity demands on the basis functions. The presence of terms in constitutive models that involve gradients of the strain field means that the $C^0$ continuity
G. N. Wells, MOLARI, LUISA, K. Garikipati   +2 more
core   +18 more sources

Micropore shape optimization for natural vibration design of porous structures

Nihon Kikai Gakkai ronbunshu, 2021
In this paper, we present a shape optimization method for periodic microstructures to maximize a specified vibration eigenvalue of a porous macrostructure.
Junpei FUJITA, Masatoshi SHIMODA
doaj   +1 more source

ToF - The Time-of-Flight Device for H1 [PDF]

, 1995
PhDEvent triggering for the H1 detector on the HERA electron-proton ring is dominated by background associated with the proton beam. A 99% reduction in trigger rate is achieved by time resolution of background from physics using ToF -a scintillator ...
Heatherington, John
core   +4 more sources

Boundary shape identification method for density based topology optimization

Nihon Kikai Gakkai ronbunshu, 2022
Topology optimization is an advanced design method that is used to generate lightweight and high-performance structures by determining the material distribution.
Yoshinori NISHIO, Yang LIU, Nagato ONO
doaj   +1 more source

Concurrent optimization method of shape and topology for natural vibration problem of shell structures

Nihon Kikai Gakkai ronbunshu, 2023
In this paper, a concurrent optimization method of shape and topology for natural vibration design of shell structures is presented. The fundamental vibration eigenvalue is maximized under volume constraints for shape and topology optimization.
Masatoshi SHIMODA, Ryo TSUTSUMI
doaj   +1 more source

Shape design optimization of initial stressed bimetal composite structures for controlling vibrational eigenvalues

Nihon Kikai Gakkai ronbunshu, 2022
By combining different material properties of two metals, bimetals have been widely designed and manufactured as parts or accessories in automobile, aircraft, marine engineering for providing specific requirements.
Jin-Xing SHI, Masatoshi SHIMODA, Shinobu SAKAI   +2 more
doaj   +1 more source

Shape optimization of preform design for minimizing plastic work of forging process

Nihon Kikai Gakkai ronbunshu, 2021
In this study, we present a parameter-free shape optimization method for preform design in forging process. The objective functional is the total plastic work of forging process.
Masahiro KITAGAWA, Masatoshi SHIMODA, Hajime KAWARASAKI   +2 more
doaj   +1 more source

Shape optimization for suppressing coherent structure of two-dimensional open cavity flow

Journal of Fluid Science and Technology, 2021
This paper presents an optimal design obtained as a shape optimization problem in a domain with a singular point. For shape optimization, the eigenvalue in Snapshot Proper Orthogonal Decomposition (Snapshot POD) is defined as a cost function.
Takashi NAKAZAWA, Takashi MISAKA, Clair POIGNARD   +2 more
doaj   +1 more source

Concurrent multi-scale shape optimization for micro and macro shape design of structures

Nihon Kikai Gakkai ronbunshu, 2021
In this study, we propose a novel shape optimization method for designing micro- and macro-structures concurrently. We assume the macro-structure consists of several arbitrary domains, which have different periodic micro-structures.
Minami FUJIOKA, Masatoshi SHIMODA
doaj   +1 more source

Optimization of slit density distribution in shoe upper made of warp knitting to optimize the contact pressure

Mechanical Engineering Journal, 2023
A method for finding the optimum distribution of the slit density in a shoe upper, such that the contact pressure with the foot approaches an ideal distribution is presented in this paper.
Mai NONOGAWA, Kenzen TAKEUCHI, Hidenaga TAKAHASHI, Hideyuki AZEGAMI   +3 more
doaj   +1 more source