Uncertainty analysis of thermal stresses in shell structure subjected to thermal loads

Kushan Prasad Verma; Prasant Kumar Swain; Dipak Kumar MaitiBhrigu Nath Singh

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Uncertainty analysis of thermal stresses in shell structure subjected to thermal loads

机译：Uncertainty analysis of thermal stresses in shell structure subjected to thermal loads

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This work is focused on developing a stochastic model to study the effect of randomness in material properties of functionally graded material, of shell structure under the effect of thermal shock. A modified and more general form of power law is utilized to functionally grade the shells along their thickness. Upon consideration of the uncertainty in the constituent properties of functionally graded material the transient temperature distribution and therefore the development of the thermal stresses in the shells are obtained and analysed. The conventionally used Monte Carlo simulation is performed for validating computationally efficient Response Surface Method based Perturbation technique, which is subsequently applied to perform stochastic analysis of thermal stresses. For various distribution patterns of the constituent materials in the functionally graded material, the randomness of thermal stresses across the thickness of the shell structure due to uncertainty in input properties is analysed. Moreover with different level of uncertainty the maximum stochasticity of thermal stresses is predicted and plotted.

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来源
《International journal of mechanics and materials in design》 |2023年第3期|621-643|共23页
作者
Kushan Prasad Verma; Prasant Kumar Swain; Dipak Kumar MaitiBhrigu Nath Singh;
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作者单位

Department of Aerospace Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India;

Department of Mechanical Engineering, C V Raman Group of Institutions, Bhubaneswar, India;

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原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
Thermal stresses; Functionally graded materials; Cylindrical shell; Monte Carlo simulation; Response surface method; Stochastic analysis; Perturbation technique;

Uncertainty analysis of thermal stresses in shell structure subjected to thermal loads

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