Studying the Temperature Effect on Lengthwise Fracture of Inhomogeneous Beam Subjected to Impact Loading

Abstract

The wide use of continuously inhomogeneous engineering materials in various load-bearing structures puts high requirements with respect to their fracture behavior. In many applications fracture represents the most often mode of structural failure. In view of this, exploring fracture behavior under various loading conditions is highly needed for guaranteeing the load-bearing capacity, safety and proper functioning of engineering structures. Developing of analyses which encompass more factors influencing fracture behavior of continuously inhomogeneous structures is very important direction in fracture mechanics. One of the extreme loadings acting on engineering structures is the impact loading which may be generated by objects falling on the structure. It happens frequently that impact loading acts in combination with other influences on the structure like, for instance, temperature field. Therefore, this paper deals with analysis of the effect of temperature filed on the lengthwise fracture in a continuously inhomogeneous beam structure subjected to impact loading by an object falling on the structure. The beam has non-linear elastic behavior. The fracture under impact loading and temperature field is analyzed by considering the strain energy release rate. The analysis is verified by applying the integral J. The change of the fracture behavior due to temperature field and the parameters of the impact loading is studied.