Mixed type shape memory alloy multi-dimensional vibration isolator
A memory alloy and vibration isolator technology, which is applied to building components, shockproof and other directions, can solve the problems of short durability of vibration isolators, single-directional vibration isolation, limited energy consumption capacity, etc., to reduce vibration, facilitate installation and disassembly, Construct simple effects
Inactive Publication Date: 2009-11-11
DALIAN UNIV OF TECH
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[0006] The invention provides a hybrid shape memory alloy multi-dimensional vibration isolator, the purpose of which is to solve the problems of existing vibration isolators such as short durability, poor corrosion resistance, limited energy consumption, inability to self-reset, and vibration isolation in only one direction
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[0016] The implementation steps of the present invention will be described in detail below in conjunction with the technical scheme and accompanying drawings.
[0017] Step 1. Analyze the engineering structure, calculate the required vibration isolation force, and determine the size and parameters of the vibration isolator according to the performance requirements to be achieved.
[0018] Step 2. Weld the outer steel cylinder 7 to the lower flange 11, and then put three layers of thin-walled shape memory alloy hollow balls 9 in the outer steel cylinder 7.
[0019] Step 3. Cut a hole in the center of the upper flange 2 with the same diameter as the inner steel cylinder 4, and weld the upper flange 2 to the upper end of the inner steel cylinder 4, and then weld the chassis 8 to the lower end of the inner steel cylinder 4.
[0020] Step 4. Three layers of martensitic shape memory alloy energy-dissipating springs 5 and austenite shape memory alloy strands 6 are evenly arranged a...
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The invention relates to a mixed type shape memory alloy multi-dimensional vibration isolator, which belongs to the technical field of civil engineering. The vibration isolator mainly comprises an upper flange, an internal cylinder, martensite shape memory alloy energy-consuming springs, austenite shape memory alloy twisted lines, an external cylinder, a base plate, thin-wall shape memory alloy hollow balls and a lower flange. The vibration isolator is characterized in that the upper end of the internal cylinder is connected with the upper flange while the lower end is connected with the base plate, the lower end of the external cylinder is connected with the lower flange, the internal cylinder is connected with the external cylinder through three layers of the martensite shape memory alloy energy-consuming springs and the twisted lines, and the shape memory alloy twisted lines are penetrated in the shape memory alloy energy-consuming springs; each layer contains eight groups of the shape memory alloy energy-consuming springs and the twisted lines which are arranged symmetrically along the circumferential radial direction of the internal cylinder; three layers of the thin-wall shape memory alloy hollow balls are placed in the external cylinder; and the vibration isolator is fixed on a part of which the structure needs vibration control by the upper flange and the lower flange. The vibration isolator has the advantages of comprehensively utilizing the hyperelasticity and the high damping characteristic of shape memory alloys and achieving the multi-dimensional direction vibration control.
Description
technical field [0001] The invention belongs to the technical field of civil engineering and relates to a hybrid shape memory alloy multidimensional vibration isolator. Background technique [0002] How to effectively reduce the response of engineering structures under external loads such as strong winds and earthquakes, and improve the disaster resistance of structures is one of the problems to be solved in the field of civil engineering. Structural vibration control can effectively reduce the damage of structures under external loads and improve the disaster prevention performance of structures. Vibration control can dissipate vibration energy through vibration reduction and vibration isolation devices, or offset the impact of external loads on the structure by applying energy. Specifically, some devices, mechanisms or substructures are installed in some parts of the structure to change or adjust the dynamic characteristics or dynamic effects of the structure, so that the...
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IPC IPC(8): E04B1/98
Inventor 李宏男伊廷华
Owner DALIAN UNIV OF TECH
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