Modularized piecewise linear nonlinear energy trap structure

The invention discloses a modular piecewise linear nonlinear energy trap structure, which comprises a mounting shell, and an oscillator assembly, an assembly mounting seat, a piecewise linear spring assembly and a damping layer assembly which are arranged in the mounting shell. Based on modular design, the piecewise linear spring assembly is simple in structure and easy to install and replace, piecewise linear spring assemblies with different spring stiffness combinations and different spring numbers can be designed, free combination and replacement can be carried out according to the multi-order modal vibration condition of stator structures such as a cartridge receiver, and the assembly efficiency is improved. The universality and reusability of other structures of the nonlinear energy trap are improved, and the design and processing cost is reduced. The damping layer assembly is simple in structure and easy to install and replace, damping layer assemblies made of different materials (friction coefficients