Stress distribution in a segmented coating film on metal fibre under tensile loading
Stress distribution in a segmented coating film on metal fibre under tensile loading
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拉伸载荷下金属纤维分段涂膜的应力分布
DOI：
10.1007/bf00551482
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发表时间：
1986
影响因子：
4.5
通讯作者：
K. Osamura
中科院分区：
文献类型：
--
作者：
Shojiro Ochiai;K. Osamura
当金属纤维或金属丝上的涂层膜是脆性的时，其在载荷下表现出多处断裂。为了描述施加在涂层膜段上的拉应力作为到膜段端部的距离的函数和作为施加应力的函数，提出了一种新的近似计算方法，假设界面结合强度足够高且不发生界面脱粘。利用本文的计算方法，定量地描述了纤维直径、涂层厚度、纤维段长度等几何因素以及纤维和涂层的杨氏模量、剪切模量、屈服应力等力学因素对纤维段所受拉应力和界面处所受剪应力的影响。
When a coating film on a metal fibre or wire is brittle, it exhibits multiple-fracture under loading. In order to describe the exerted tensile stress on the segments of a coating film as a function of the distance from the end of the segments and as a function of applied stress, a new approximate calculation method is presented, assuming that the interfacial bonding strength is high enough and no interfacial debonding occurs. Using the present calculation method, effects of geometrical factors such as fibre diameter, thickness of coating film and length of segment as well as those of mechanical factors such as Young's modulus, shear modulus and the yield stress of the fibre and the coating film on the exerted tensile stress on the segments and also on the exerted shear stress at the interface are described in a quantitative manner.