The stress field in the composite fabric which made by needle punching during tensile test, and the difficulty of calculating the stress - strainproperty are analyzed from the fabric structure.
根据针刺复合织物结构,分析其在拉伸过程中的内部应力场,说明拉伸应力应变预测计算的困难。
2
Influences of the hard segment content, crosslinking degree and density on the compressive stress-strainproperty, compressive stress relaxation and tensile property of PUEF were studied.
The test results show that the fatigue property curve and the cyclic stress-strain curve of LZ50 axletree steel perfectly conform to double logarithm linear relationship.