Abstract
Keywords:
single-bolted joint, multi-bolted joint, safety factor against sliding, analytical solution, finite element solution, comparison of results
Abstract
In the technical practice the fastening of certain structural parts is generally realized by multibolted joints, however the standards, technical guidelines, strength assessment procedures are valid for single-bolted joints, only. To release this problem it is necessary to clarify the force distribution among the single-bolted joints and then to apply the relevant standards and other procedures in order to be able to carry out the strength assessment of the design in point. Another important task is to determine those conditions under which the clamped structural parts can slide on each other. To handle this problem the concept of the safety factor against sliding has been applied. To solve the abovementioned problems a simplified procedure was developed at our company which provides the design engineer with the necessary data obtained by an analytical method. This method can contribute to cutting the duration of the design process considerably, already in its early stage. However the final constructional solution is to be assessed, as well, i.e. a more detailed calculation model capable of taking various kinds of effects into consideration has been created by means of ANSYS Workbench. The paper presents the load distribution by means of the analytical and the finite element methods on the basis of a given practical example, furthermore it compares the results gained by the two methods, gives the usability limits of the single methods and finally shows the determination way of the safety factor against sliding.