On transient sliding motion
On transient sliding motion
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关于瞬态滑动运动
DOI：
10.1111/j.1365-246x.1978.tb04240.x
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发表时间：
1978
影响因子：
2.8
通讯作者：
K. Broberg
中科院分区：
文献类型：
--
作者：
K. Broberg
概括。研究了理想干摩擦情况下的两种瞬态滑动运动。一种涉及沿传播方向长度恒定的条带以恒定传播速度进行的单向滑移。另一个涉及沿以恒定速度对称扩展的条带的拉伸滑移。前一种涉及一个前缘和一个后缘，而后者涉及两个前缘。在前缘处必须有一个撕裂区域，在此处开始滑动，并且在后缘处必须有一个愈合区域，在此处滑动停止。这些区域的有限性源自有界应变的要求。在所选择的线性化处理中，边缘过程通过撕裂模量和愈合模量来描述，两者都是材料的特性。给出了施加的远程应力、滑动区域的延伸、滑移量、滑移传播速度和能量耗散率之间的关系。
Summary. Two kinds of transient sliding motion under a case of idealized dry friction are studied. One concerns uni-directional slip at constant propagation velocity along a strip of constant length in the propagation direction. The other regards extensional slip along a strip expanding symmetrically with constant velocity. The former kind involves one leading and one trailing edge, whereas the latter involves two leading edges. At a leading edge there must be a region of tearing, where sliding is initiated, and at a trailing edge a region of healing, where sliding ceases. The finiteness of these regions follows from the requirement of bounded strains. In the linearized treatment chosen, the edge processes are described by a modulus of tearing and a modulus of healing, both being characteristics of the material. Relations between the applied remote stress, the extension of the sliding region, the amount of slip, the slip propagation velocity and the rate of energy dissipation are given.