Improved Finite Element Analysis of Multilayered, Doubly Curved Composite Shells

Author:

Sk Latifa1,Sinha P. K.1

Affiliation:

1. Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur, India – 721 302

Abstract

An improved finite element model for the bending and free vibration analysis of doubly curved, laminated composite shells having spherical and ellipsoidal shapes is presented. The present formulation is based on the stress resultant-type Koiter’s shell theory and no restriction is imposed on the magnitude of curvature components to capture the deep and shallow shell cases. The twist curvature component is incorporated along with the normal curvatures to keep the strain equations complete. Transverse shear deformation is also considered according to Mindlin’s hypotheses. Both the Lagrangian and Serendipity families of isoparametric elements are incorporated in the analysis code to study their performance in different problems. The present five-DOF shell formulation is kept sufficiently general to capture both the bending- and membrane-dominated problems. The accuracy and efficiency of the proposed finite element are illustrated by examples and are compared with those existing in the open literature. The comparison shows that the present analysis yields accurate results with a relatively small number of elements.

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3