Numerical limit and shakedown analysis method for kinematic hardening structure made of arbitrary inhomogeneous material

2020 ◽  
Vol 234 ◽  
pp. 111641 ◽  
Author(s):  
Song Huang ◽  
Hu Hui ◽  
Zhiping Chen
Keyword(s):  
Kinematic Hardening ◽  
Inhomogeneous Material ◽  
Analysis Method ◽  
Shakedown Analysis

Investigation on Method of Elasto-Plastic Analysis for Piping System (Benchmark Analysis)

2016 ◽  
Author(s):  
Masashi Arai ◽  
Nobuyuki Kojima ◽  
Takuro Kabaya ◽  
Satoru Hirouchi ◽  
Masatsugu Bando
Keyword(s):  
Yield Point ◽  
Kinematic Hardening ◽  
Strain Range ◽  
Fatigue Curve ◽  
Piping System ◽  
Analysis Method ◽  
Benchmark Analysis ◽  
Hardening Law ◽  
Plastic Analysis ◽  
Piping Systems

This report proposes an elasto-plastic analysis method to be used for practical aseismic designing of nuclear piping systems. JSME (the Japan Society of Mechanical Engineers) initiated a task to establish an elasto-plastic analysis method for nuclear piping systems. During this task, benchmark analysis was conducted in order to examine the elastic-plasticity analytical method, in which our company decided to participate. Our policy for evaluation was that the material characteristics to be used in benchmark analysis were based on the standards for nuclear designs in Japan. As a consequence, we prepared a method to accurately simulate the vibration test on piping systems. The recommended elasto-plastic analysis method is thus specified as follows: 1) The elasto-plastic analysis method comprised of dynamic analysis on piping system modeled using beam elements and static analysis of the deforming elbow which was modeled using shell elements. 2) Bi-linear was applied as the elasto-plastic characteristics. The yield point was the standardized yield point times 1.2, and the second gradient was 1/100 the Young’s modulus. Kinematic hardening law was used as the hardening law. 3) Rain flow method and fatigue curve of an existing research were used to evaluate the fatigue life for the strain range obtained by elasto-plastic analysis.

A numerical shakedown analysis method for strength evaluation coupling with kinematical hardening based on two surface model

2019 ◽  
Vol 103 ◽  
pp. 275-285
Author(s):  
Songhua Huang ◽  
Yugong Xu ◽  
Geng Chen ◽  
Lele Zhang ◽  
Alexander Bezold ◽  
...  
Keyword(s):  
Surface Model ◽  
Analysis Method ◽  
Shakedown Analysis ◽  
Strength Evaluation
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