Heterogeneous metal energy-absorbing and shock-absorbing high-damping component and additive manufacturing method thereof
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A heterogeneous metal, high damping technology, applied in shock absorbers, additive manufacturing, additive processing, etc., can solve problems such as space extrusion, achieve shock absorption protection, and realize the effect of reusability
Active Publication Date: 2022-07-26
JILIN UNIV
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[0005] The present invention designs a bionic honeycomb structure with zero Poisson's ratio, uses the existing additive manufacturing technology to realize the integration of material-structure damping, and proposes a heterogeneous metal energy-absorbing shock-absorbing high-damping component, which effectively reduces the While shock buffering, it solves the problem of space extrusion caused by compression and expansion; in addition, using the advantages of mechanical structure and functional materials, it provides a guarantee for the stable operation of high-precision electronics and instrumentation equipment
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Embodiment 1
[0067] An additive manufacturing method for a heterogeneous metal energy-absorbing, shock-absorbing and high-damping component, comprising the following steps:
[0068] S1. Model processing: Use Solidworks to build the shape memory alloy shock absorber core 5 and the stabilizer 6 model, and import the built model into Magics for processing;
[0069] ①Build block support for the suspended surface in the model along the slope closest to the suspended surface;
[0070] ②Set the shape memory alloy shock absorbing core 5 as the processing material of NiTi alloy, and the processing parameters are: laser power (P) 105w, scanning speed (v) 600mm / s, scanning distance (h) 80μm, layer thickness 30μm;
[0071] ③Set the processing material of the stabilization table 6 to be Mn-Cu alloy, the processing parameters are: laser power 200w, scanning speed 400mm / s, laser scanning spacing 80μm, layer thickness 30μm;
[0072] ④ Set the intermediate layer to be Cu metal with a thickness of 0.8mm; ...
Embodiment 2
[0087] Embodiment 2: A method for additive manufacturing of heterogeneous metal energy-absorbing, shock-absorbing and high-damping components, comprising the following steps:
[0088] S1. Use Solidworks to build the shape memory alloy shock absorbing core 5 and the stabilizer 6 model, and import the built model into Magics for processing;
[0089] ①Build block support for the suspended surface in the model along the slope closest to the suspended surface;
[0090] ②Assign the processing parameters of the shape memory alloy shock absorption core 5 model: the laser power is 105w, the scanning speed is 600mm / s, the laser scanning distance is 80μm, and the layer thickness is 30μm;
[0091] ③Select the rotary scanning strategy, the rotation angle is 67°, and the strip width is 5mm;
[0092] S2. Select NiTi powder with a particle size of 15-53μm and a Ni composition of 50.8%at for processing preparation. The oxygen content in the forming chamber is controlled below 50ppm, and the s...
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Abstract
The dissimilar metal energy absorption and shock absorption high-damping component comprises a limiting upper portion, a top sheath and a connecting device are arranged at the upper end of the limiting upper portion, the inner diameter of the limiting upper portion is in sliding limiting connection with the outer diameter of a limiting lower portion, and a shape memory alloy shock absorption core and a stabilizing table are concentrically arranged on the outer sides of the limiting upper portion and the limiting lower portion. The lower end of the shape memory alloy damping core is fixedly connected with the stabilizing table through the middle layer, the outer layer of the spring wraps the insulating device, the spring is wound on the outer side of the stabilizing table, the upper end of the spring is connected with the lower end of the shape memory alloy damping core, and the lower end of the spring is connected with the component base. The core sleeve surrounds the outer sides of the top sheath, the shape memory alloy damping core and the spring; the shape memory alloy damping core is composed of a zero-Poisson-ratio bionic honeycomb unit array. In the uniaxial compression process, the shape memory alloy damping core meets the condition that transverse deformation does not occur, and meanwhile damping protection can be achieved.
Description
technical field [0001] The invention relates to the technical field of aircraft shock absorption and protection, in particular to a heterogeneous metal energy-absorbing shock-absorbing high-damping component and an additive manufacturing method thereof. Background technique [0002] In the field of aerospace, how to overcome the severe vibration generated by the spacecraft during the landing process has always been a hot research topic for scientists. With the increasing speed and power of the new generation of aerospace equipment, the noise and vibration problems caused by the operation of machinery and equipment are also particularly prominent. Statistics show that the harsh mechanical environment will seriously affect the working state of high-precision electronic and instrumentation equipment, and even cause the failure of aerospace equipment. Therefore, it is of great significance to carry out research on shock absorption and noise reduction of aerospace equipment. [...
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