Multiaxial fatigue behavior of thermoplastics including mean stress and notch effects: Experiments and modeling

被引：39

作者：

Amjadi, Mohammad ^{[1
]}

Fatemi, Ali ^{[1
]}

机构：

[1] Univ Memphis, Mech Engn, Memphis, TN 38152 USA

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 136卷

关键词：

Multiaxial fatigue; Thermoplastics; Notch effect; Mean stress effect; Critical plane damage parameter; HIGH-DENSITY POLYETHYLENE; FIBER-REINFORCED POLYAMIDE; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; DAMAGE; CAVITATION; MICROSTRUCTURE; POLYPROPYLENE; POLYMER; FRACTURE;

D O I：

10.1016/j.ijfatigue.2020.105571

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Thermoplastics are used in many industries with many applications and can be manufactured using different processing techniques. Multiaxial loading and non-proportionality between different loading sources are inevitable in many design applications with such materials. In this study, multiaxial fatigue behavior of extruded high density polyethylene (HDPE), polypropylene (PP), and neat polyamide66 (PA66) as well as reinforced with short glass fibers (PA66-G30) was investigated. The effects of mean stress and stress concentration on multiaxial fatigue behavior were also studied. Analytical models to account for these effects based on observed damage mechanism are presented and discussed by the comparing with the experimental data.

引用

页数：14

共 52 条

[1] IN-SITU OBSERVATION OF THE PLASTIC-DEFORMATION OF POLYPROPYLENE SPHERULITES UNDER UNIAXIAL TENSION AND SIMPLE SHEAR IN THE SCANNING ELECTRON-MICROSCOPE [J].