Fracture failure behavior prediction method of micro-nano fiber reinforced composite material
A technology of reinforced composite materials and micro-nano fibers, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as reduced calculation efficiency, inaccurate crack propagation results, and increased calculation complexity, so as to improve calculation Efficiency, effect of accurate matrix stress field
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[0015] This embodiment relates to a fiber bridge reinforcement simulation method for micro-nano composite materials, including the following steps:
[0016] Step 1, pre-processing: determine the geometric parameters and mechanical performance parameters of the model, divide the grid by finite element software and determine the embedded length and direction of the fiber.
[0017] The geometric parameters include: the overall length, height and thickness of the model as well as the radius and total length of the fibers.
[0018] The mechanical performance parameters include: matrix elastic modulus, Poisson's ratio, ultimate stress, and fracture energy; fiber elastic modulus and ultimate stress; interface elastic modulus and ultimate shear stress.
[0019] In this embodiment, the model parameters are as figure 2 As shown, the geometric size of the model is 430mm×100mm×100mm. The modulus of elasticity of the matrix E m =30GPa, Poisson's ratio v m =0.2, ultimate stress Fract...
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