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1)  dynamic fracture of ductile material
韧性介质动态损伤
2)  ductile damage
韧性损伤
1.
Resistance method of ductile damage measurement of metallic materials;
金属材料韧性损伤测量的电阻法
2.
Based on Lee's plastic yield function for porous material, and hypothesis that fracture initiation occurs when the void density is accumulated to a critical value,a new ductile damage model for porous material was derived.
以Lee多孔材料屈服模型为基础 ,并假设空穴密度积累到一临界值时 ,材料出现裂纹 ,推导出适用于多孔材料的韧性损伤模型。
3.
Based on the ductile damage and fracture thereom and finite element method, the core damage and fracture of the bimetal with harder core and softer sleeve under various parameters were investigated, and the ductile damage evolution of the core was discovered.
文中基于韧性损伤和断裂理论以及有限元分析方法,针对芯层金属较硬、套层金属较软的双金属的正挤压成形,研究了不同参数条件下芯层金属的韧性损伤和断裂,揭示了芯层金属的韧性损伤演化规律。
3)  damaged media
损伤介质
1.
The theory of elastic wave propagation in damaged media was studied.
对弹性波在损伤介质中的传播理论进行研究 。
2.
The basic properties of elastic wave propagation in inhomogeneous damaged media were discussed by e.
对弹性波在非均匀损伤介质中的传播理论进行了研究。
4)  Dynamic damage characteristics
动态损伤特性
5)  dynamic ductile damage
延性动态损伤
6)  dynamic toughnes
动态韧性
1.
The experiment results show that the dynamic response of the laminates is clearly dependent upon temperatures and strain rates and there exists dynamic toughness in the laminates.
实验结果表明,玻璃布环氧层板具有明显的应变率、温度效应;在室温以上温度环境下,该层板具有动态韧性。
补充资料:超韧性聚甲醛
分子式:
CAS号:

性质:又称超韧性聚甲醛。多采用机械共混法制备。一般需要在高剪切力的双螺杆挤出机或密炼机中进行。它具有如下特性:(1)韧性高,改共混物的缺口冲击强度为聚甲醛(POM)的7倍,无缺口冲击强度为POM的30倍,而且比PC高10倍;(2)吸湿性小,从而保证了制品的尺寸稳定性;(3)耐溶剂性、耐应力开裂性优于PC。以100ST为例,密度1.34g/cm3,拉伸强度46MPa,断裂伸长率200%,弯曲模量1.41GPa,热变形温度(1.86MPa负荷)90℃,悬臂梁缺口冲击强度940J/m。适于制造汽车、农业机械、电器、机械、建筑、运输和精密仪器的零部件等。

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