STRESS ANALYSIS METHOD APPLICABLE TO THE MIXED MODE LOADING WITH NO CONSIDERATION OF THE CONTACT BETWEEN MATERIAL AND JIG

摘要

A stress analysis method applicable to a mixed mode loading without considering the contact between material and a jig is provided to exactly realize the loading state of a mixed mode, and reduce the complexity and calculating time of a coding. A stress analysis method applicable to a mixed mode loading without considering of the contact between material and a jig includes the steps of: applying a displacement increment to a jig hole in a direction of a loading angle by the size of the displacement increment, and calculating a displacement restriction condition at each hole of a testing material; calculating repulsive force at the each hole of the testing material; calculating a moment by the repulsive force at the jig hole; repeating from the first to the third steps when the calculated moment at the third step is less than a critical moment; rotating upper/lower jigs around the jig hole with fixing the jig hole position when the calculated moment is more than the critical moment; and deciding the displacement of the each hole with the displacement and rotation increments.