Reliability Analysis of Quick Coupler Attached to Rescue Manipulator Arm

Abstract

Considering the complexity of the working conditions of the rescue manipulator arm and the safety of the rescue requirements, the structural reliability of the quick coupler that is important connecting component of the rescue manipulator arm is studied. Based on the stress-strength interference theory, a mathematical model of reliability analysis is established. The parameterized model of the key structure belonging to the quick coupler is established by using the APDL language. The randomness of variables such as critical dimensions, elastic modulus and load is fully considered. Using the PDS module of ANSYS, the Monte Carlo method is used to analyze the reliability of the key structure of the quick coupler. The stress probability distribution characteristics of the finite element analysis model are obtained. The research results are of great significance for verifying the rationality of the structural design of the quick coupler.