RESEARCH ON STIFFNESS REDUCTION OF UNIDIRECTIONAL LAMINATES UNDER STATIC TENSILE LOADS

WANG Le; WU FuQiang

doi:10.16579/j.issn.1001.9669.2017.06.008

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RESEARCH ON STIFFNESS REDUCTION OF UNIDIRECTIONAL LAMINATES UNDER STATIC TENSILE LOADS

更新时间：2022-09-22

- RESEARCH ON STIFFNESS REDUCTION OF UNIDIRECTIONAL LAMINATES UNDER STATIC TENSILE LOADS
- Journal of Mechanical Strength Vol. 39, Issue 6, Pages: 1302-1309(2017)
- 作者机构：
  
  1. 南京航空航天大学航空宇航学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.06.008
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WANG Le, WU FuQiang. RESEARCH ON STIFFNESS REDUCTION OF UNIDIRECTIONAL LAMINATES UNDER STATIC TENSILE LOADS. [J]. 39(6):1302-1309(2017)
DOI：

WANG Le, WU FuQiang. RESEARCH ON STIFFNESS REDUCTION OF UNIDIRECTIONAL LAMINATES UNDER STATIC TENSILE LOADS. [J]. 39(6):1302-1309(2017) DOI： 10.16579/j.issn.1001.9669.2017.06.008.

摘要

复合材料单向板在静力拉伸载荷作用下产生损伤后刚度会衰减下降。通过分析单向板静力拉伸破坏过程,研究了纵向、横向及剪切向应力分量对材料刚度衰减的影响,建立了考虑载荷大小和铺角变化的刚度渐进退化模型。为验证模型的合理性,对一系列不同铺角的T700/YPX3001复合材料单向板进行了静力拉伸试验,并且基于所提出的模型采用数值仿真方法模拟复合材料单向板在静力拉伸载荷作用下的损伤过程,数值仿真结果与试验结果相吻合。

Abstract

The stiffness of unidirectional laminates will reduce due to damage under static tensile loads. By analyzing the failure process of unidirectional laminates,study on the effect of stiffness reduction caused by the longitudinal,transverse and shear stress components was conducted. A new model of stiffness progressive reduction considering loads and ply angles was established. The rationality of this model was verified by static tensile tests of series of T700/YPX3001 unidirectional laminates with different ply angles. A numerical simulation based on the proposed model of the failure process of unidirectional laminates under static tensile loads was implemented. The analysis results are in good agreement with experimental results.

关键词

复合材料单向板刚度衰减弹性模量数值仿真

Keywords

CompositeUnidirectional laminateStiffness reductionElasticity modulusNumerical simulation

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