Visualization method of load transfer path of bearing structure based on the principle of stiffness change

Abstract

The load transfer path visualization method of load-bearing structures based on the principle of stiffness change first calculates the U* of each point in the load-bearing structure and its corresponding gradient vector, and uses the fourth-order Runge-Kutta numerical integration method to calculate the U* of each point in the load-bearing structure The gradient vector is numerically integrated, and the obtained curve is the load path in the load-bearing structure; then, starting from the point where U* is zero, the U* field contour is extracted, and the cross-section is made for each point on the contour along each contour analysis, extract the ridge points on it, and connect each ridge point in sequence to obtain the main load path based on the stiffness change; the invention can clarify the transfer direction and distribution form of the load path in the structure, in order to accurately grasp the load transfer and distribution rules.

Description

technical field [0001] The invention belongs to the technical field of load-bearing structure design, and in particular relates to a load-transfer path visualization method of a load-bearing structure based on the principle of stiffness variation. technical background [0002] The load-bearing structure is an important basic component of industrial equipment, and its main function is to support other parts and transfer loads. In the structural design stage, the visualization of the load path is also of great help to the evaluation of the structural load-bearing performance and the optimal use of materials. The principal stress trace method is currently the most widely used method for extracting load paths. It is widely used in the reinforcement of concrete structures and the shape design of structures. The stress at each point on the principal stress trace has the same properties, but its The magnitudes are generally not equal, and in general the principal stress trace is n...

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Problems solved by technology

The principal stress trace method is currently the most widely used method for extracting load paths. It is widely used in the reinforcement of concrete structures and the shape design of structures. The stress at each point on the principal stress trace has the same properties, but its The magnitudes are generally not equal, and in general the principal stress trace is not connected from the point of application of the load to the point of restraint, these properties of the principal stress trace make it impossible to accurately describe the transfer path of the load within the structure

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