当前位置: X-MOL 学术Eur. J. Mech. A Solids › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A cubic spline layerwise spectral finite element for robust stress predictions in laminated composite and sandwich strips
European Journal of Mechanics - A/Solids ( IF 4.1 ) Pub Date : 2021-07-06 , DOI: 10.1016/j.euromechsol.2021.104362
D.K. Siorikis 1 , C.S. Rekatsinas 1 , N.A. Chrysochoidis 1 , D.A. Saravanos 1
Affiliation  

A new theoretical and numerical tool, comprising of a novel cubic Hermite spline layerwise theory and a spectral strip finite element with integration points collocated to its nodes and high-order polynomial shape functions, is evaluated regarding its capability to predict intralaminar and interlaminar stresses in laminated and sandwich composite strips. Stress predictions in various laminated and thick sandwich beams are presented and compared with exact solutions, high-fidelity plane-strain FE models and reported zig-zag layerwise models. Emphasis is placed on the capability of the present model to predict interlaminar stresses on the free-edges, at ply interfaces, in resin-rich layers and in laminates with artificial delaminations. All numerical results illustrate the capabilities of the present computational tool to provide accurate and robust interlaminar stress predictions implementing coarse discretization, thus ensuring the validity and rapid convergence of the combined higher-order layerwise laminate theory and spectral finite element model.



中文翻译:

用于层压复合材料和夹层条带中稳健应力预测的三次样条分层谱有限元

一个新的理论和数值工具,包括一个新的三次 Hermite 样条分层理论和一个光谱带有限元,积分点并置到它的节点和高阶多项式形状函数,评估了它预测层压板层内和层间应力的能力。和三明治复合带。介绍了各种叠层和厚夹层梁的应力预测,并与精确解、高保真平面应变有限元模型和报告的锯齿形分层模型进行了比较。重点放在本模型预测自由边缘、层界面、富含树脂的层和具有人工分层的层压板的层间应力的能力。

更新日期:2021-08-29
down
wechat
bug