2 results about "Effective stiffness" patented technology

The present application relates to a kind of methods for reducing the internal defects of composite winding products, the present application can realize the accurate control of winding product size by outer mold, control winding tension before injecting glue, so as to provide driving force for inner resin and inhibit its defect generation;During the injection process, the resin matched with winding resin is injected into the winding product by driving pressure, the driving force of injection cooperates with winding tension, drives away bubble from inside and outside at the same time, balances the distribution of resin, solves the problems of high porosity of fiber winding product, uneven resin distribution and low interlaminar performance, improves the integrity, density and uniformity of winding product.The present application effectively reduces the crack initiation source of product, improves the stress transfer ability of product interior, improves the load-carrying capacity of such components, avoids the sharp reduction of effective stiffness caused by the invasion of pressure medium due to the mutual penetration of internal pores, improves the reliability of such products.

The application relates to a spring motion behavior simulation method and system. The spring motion behavior simulation method comprises the following steps: acquiring geometric defect feature data and assembly deviation feature data of a spring; constructing a spring digital model based on the geometric defect feature data and the assembly deviation feature data; predicting local coil contact and buckling deformation of the spring in the spring motion process based on the spring digital model, and quantifying nonlinear friction damping and dynamic effective stiffness variation of the spring. The application can more truly simulate the non-ideal behavior of the spring under the action of complex loads by integrating the actually existing geometric defects and assembly deviations into the digital model, improves the accuracy of design verification, and provides a reliable basis for performance optimization of a vehicle suspension system.