Rigidity variable elastic system simulating device

Abstract

The variable rigidity elastic system simulator is used in marine engineering field. The present invention includes rigid casing, spring, spring limiting device, spring pre-tensing device, cable and cable guiding hole in the connection relation of connecting the spring inside the rigid casing between the tail of the rigid casing and the cable, penetrating the cable through the cable guiding hole outside the rigid casing to bear the outside tension, and setting the spring limiting device and the spring pre-tensing device onto the spring. The present invention controls the setting of the limiting device and the pre-tensing device to make them begin to exert at the rigid altering point, so as to meet the requirement of simulating variable rigidity elastic system. The system with complicated rigidity variation or high simulation requirement may be also simulated vian increasing the number of the limiters or increasing the number of the rigidity varying points.

Description

technical field [0001] The invention relates to a simulation device, in particular to a simulation device for a variable stiffness elastic system. Used in marine engineering field. Background technique [0002] In the field of ship and ocean engineering tests, when simulating the elasticity of mooring cables or tow cables, its stiffness is often required to change with different loads, which no longer fully conforms to Hooke's law. When it is in the case of low load, its stiffness gradually increases with the increase of load, and when the load increases to a larger value, the change of stiffness will change abruptly, that is, its stiffness increases with the increase of load slowing shrieking. The specific manifestation is that this kind of cable starts to become more and more "hard" as the tension increases, but when the tension increases to a certain value, it will suddenly become "soft". [0003] Found through document retrieval to prior art, people such as Yu Xiangsa...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a variable stiffness elastic system simulation device, use a variety of limiting devices to make the elastic characteristics of the elastic system meet the requirements of variable stiffness, not only can solve the problem when the load gradually increases The simulation problem of stiffness increase can also simulate the tension characteristics of the cable whose stiffness suddenly decreases under the condition of large load

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