2 results about "Deformation strain" patented technology

The embodiment of the present application provides a method for determining the deformation of a roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material and related equipment, and the deformation strain energy W of resin can be obtained R , the tensile deformation energy W of fibers under pressure F , and the correction deformation energy W generated by interaction FR The sum of the deformation strain energy W of the resin R , the tensile deformation energy W of the fibers under pressure F and the correction deformation energy W FR is determined as the deformation of the roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material. It can be seen that the present application can determine the deformation of the roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material, which is helpful for the optimization of multiple links such as production, transportation and the like.

This invention discloses a method for testing the dynamic mechanical properties of brittle materials using high-speed variable-depth cutting, relating to the field of dynamic mechanical property testing. It employs a diamond ball-end cutter to perform variable-depth cutting on the surface of the test material, obtaining deformation behavior under different loading conditions. Cutting stress and strain rate are calculated for the plastic region of the cutting area. The stress in the cutting area is dimensionlessly processed under different strain rates, and the relationship curve between dimensionless stress and dimensionless strain rate is fitted to obtain a strain rate-dependent material constitutive model. The cutting area is irradiated using a laser-assisted heating device, with the heating temperature as the cutting variable, to establish a material constitutive model that comprehensively considers the effects of temperature and strain rate. This invention transforms the processing method into a material property testing method, achieving a higher dynamic deformation strain rate than methods such as split Hopkinson bars or tension bars, providing a new solution for dynamic material property testing.