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A Simple Inelastic Constitutive Model for Evaluation of Stable Cyclic Stress Response Under Nonproportional Straining

[+] Author Affiliations
Masao Sakane

Ritsumeikan University, Kusatsu-shi, Shiga, Japan

Takamoto Itoh

Fukui University, Fukui, Japan

Xu Chen

Tianjin University, Tianjin, P. R. China

Paper No. PVP2002-1224, pp. 73-82; 10 pages
doi:10.1115/PVP2002-1224
From:
  • ASME 2002 Pressure Vessels and Piping Conference
  • Pressure Vessel and Piping Codes and Standards
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4650-4
  • Copyright © 2002 by ASME

abstract

This paper proposes a simple two-surface model for cyclic incremental plasticity based on combined Mroz and Ziegler kinematic hardening rules under nonproportional loading. The model has only seven material constants and a nonproportional factor which describes the degree of additional hardening. Cyclic loading experiments with fourteen strain paths were conducted using Type 304 stainless steel. The simulation has shown that the model was precise enough to calculate the stable cyclic stress-strain relationship under nonproportional loadings.

Copyright © 2002 by ASME

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