Prestretching type mechanical environment simulator

Abstract

The invention provides a prestretching type mechanical environment simulator which comprises a base, a self-locking device, a boundary condition simulation device, a strain simulation device, a top support and a marine acoustic material, wherein the boundary condition simulation device comprises a boundary hydraulic cylinder, a boundary connecting rod for connecting the boundary hydraulic cylinder, and a clamp; the strain simulation device comprises a stain hydraulic cylinder and a stain connecting rod for connecting the stain hydraulic cylinder; the stain hydraulic cylinder is fixed on the base; the boundary hydraulic cylinder is installed on the base through the self-locking device; the top support is connected with the strain connecting rod; a clamping structure is formed by the marine acoustic material, the boundary condition simulation device and the top support; the upper part of the clamping structure is formed by the marine acoustic material; the lower part of the clamping structure is formed by the other components; and a tested piece is arranged between the upper part and the lower part of the clamping structure and is fixed by the clamp. The simulator has the characteristics of being simple in structure, convenient to install, easy to operate and control and the like.

Description

technical field [0001] The invention relates to a real ship environmental load simulation device for marine acoustic materials. Background technique [0002] Due to the needs of marine scientific investigation, marine resource detection, and ocean territory patrol, the diving depth of underwater vehicles continues to increase, and the related technologies of deep-sea vehicles have also attracted widespread attention from all over the world. my country also regards deep-sea vehicles as the main direction for the development of underwater vehicles in the future, and its research and development has also become an important focus of current domestic scientific and technological workers. With the gradual deepening of the research work, the problems exposed in the research process of deep-sea vehicles have also puzzled the vast number of scientific and technological workers, and have become the bottleneck of deep-sea vehicle research. For example, the safety of marine acoustic ma...

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Problems solved by technology

[0004] (1) Large deformation of marine acoustic materials

Marine acoustic materials are mainly composed of polymer viscoelastic materials with small Young's modulus, which will produce large shrinkage deformation together with the pressure-resistant shell structure of deep-sea vehicles under hydrostatic pressure, but due to its Young's modulus The volume is low, and it will produce large deformation under the action of high hydrostatic pressure in the deep sea, and because the marine acoustic material contains a periodic cavity structure, the uniformity of its deformation under hydrostatic pressure also varies with the change of the internal periodic structure. ;

[0005] (2) Technological issues of marine acoustic materials

The deformation and non-uniformity of deformation of marine acoustic materials under high hydrostatic pressure may lead to damage such as tearing and glue opening of the connecting surface of acoustic materials and the internal structure of marine acoustic materials, which poses new challenges to the installation process of marine acoustic materials ;

[0006] (3) Coordinated deformation of marine acoustic materials and pressure shells

[0008] The influence of the physical parameters of the sound-absorbing material on the sound-absorbing performance of the anechoic tile ("Journal of Harbin Engineering University", Volume 25, No. 3, June 2004), focuses on the analysis of the physical parameters of the material and the cavity structure on the sound absorption of the acoustic covering layer. performance, but did not take into account the impact of the deep sea physical and mechanical environment on the cavity structure

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