A fuzzy-set analysis for a dynamic thermo-elastoviscoplastic damage response

被引：15

作者：

Abdel-Tawab, K ^{[1
]}

Noor, AK ^{[1
]}

机构：

[1] Univ Virginia, Ctr Adv Computat Technol, NASA, Langley Res Ctr, Hampton, VA 23681 USA

来源：

COMPUTERS & STRUCTURES | 1999年 / 70卷 / 01期

关键词：

dynamic response; viscoplasticity; damage; sensitivity; fuzzy-set; Ti-6Al-4V;

D O I：

10.1016/S0045-7949(98)00162-X

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A computational fuzzy-set based approach is used to study variability (uncertainty) in the mechanical response of dynamically-loaded simple structural components. The mechanical response is described by a thermo-elastoviscoplastic material model that accounts for damage. The uncertainty in the response is associated with pre-selected variations in material parameters. Sensitivity studies are performed to identify the material parameters which have the most significant effect on the response. Those parameters are then assumed to be fuzzy, and time histories of the possibility distributions of the response quantities are constructed. Numerical results are presented for a titanium alloy Ti-6Al-4V. Published by Elsevier Science Ltd.

引用

页码：91 / 107

页数：17

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