CN100560350C - Metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof - Google Patents
Metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof Download PDFInfo
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- CN100560350C CN100560350C CNB2007100104871A CN200710010487A CN100560350C CN 100560350 C CN100560350 C CN 100560350C CN B2007100104871 A CNB2007100104871 A CN B2007100104871A CN 200710010487 A CN200710010487 A CN 200710010487A CN 100560350 C CN100560350 C CN 100560350C
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- honeycomb sandwich
- metallic honeycomb
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Abstract
The invention discloses a kind of metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof.Energy-absorbing material comprises: shell, the combination of metallic honeycomb sandwich body, dividing plate, metal solder layer, the combination of metallic honeycomb sandwich body is made up of 1～4 metallic honeycomb sandwich body, wherein to be regular hexagon cellular for the end face of each metallic honeycomb sandwich body, and each parts links together by the soldering of metal solder layer.The preparation method comprises: the corrugating plate, and forming end face is cellular metallic honeycomb sandwich body; Clean each parts; The metal solder layer is folded up between each parts, and the metallic honeycomb sandwich body of combination is placed in the metal shell, seal up with end cap at two ends, uses the metal end at clamp two ends then; Place in vacuum drying oven or the pure Ar atmosphere furnace, carry out soldering.Its load to weight ratio of assembly energy-absorbing construction material and buffering efficient can reach more than 90%.This material uses as the structure member of traffic delivery means, in carrying simultaneously, plays the effect of crusherbull zone energy-absorbing.
Description
Technical field
The present invention relates to structure function material technology field, particularly a kind of metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof.
Background technology
Since the seventies in 20th century, because developing of automobile industry makes the research of energy absorbing structure and material more and more be subject to people's attention, the raising that passenger life is worth makes people more in the past than the research of whenever all paying attention to more endergonic structure and material.For motion structures such as vehicle, spacecrafts, when crashing, can absorb impact energy and protect the member and the safety of valuables is crucial.Shock loading when the buffering energy-absorbing element can slow down these motion structures collisions with fracture by the flexing of structure, dissipation impact energy, the safety of protection member and valuables.Should satisfy light weight, specific energy absorption height, load to weight ratio and buffering efficient height, low cost and other advantages as energy absorbing element.Usually, can be a lot of as the structure of power-absorbing, for example, thin-wall metal pipe, composite shell, metal or polymer foam and honeycomb etc.These power-absorbings generally independently do not exist as additional structure, but combine with other structure.During operate as normal, can play effects such as carrying, decoration; When having an accident, can absorb shock loading, dissipation lot of energy by forms such as elastic-plastic deformation and fractures.At present, the lot of domestic and international scholar has carried out comparatively careful research to energy absorbing structure.Research institutions such as NASALangley research center, Ford motor corporation, Universityof Michigan, University of Cambridge, University of Liverpool, Kyoto Institute of Technology and French National Institute for Transportation and Safety Research have carried out detailed research to the energy absorption performance of composite material thin wall shell; Document " Cellular Solids:Structure and Properties " has carried out theory and experimental study to the energy absorption characteristics of various born of the same parents' shape solids; Document " energy absorption of material and structure-crash-worthiness packing security protection " and " cylindrical shell shock dynamics and crash-worthiness design " etc. have been carried out great deal of experimental to the impact energy absorption characteristics of composite shell, metal thin-wall housing and born of the same parents' shape material; Research contents in these documents relates to problems such as the deformation mechanism of basic principle, knockout process of form kind, structure optimization design, the bump energy-absorbing of the material of buffering energy-absorbing element and performance thereof, structure and knockout process numerical simulation, but great majority serve as main research with composite cylinder shell, thin-wall construction, aluminium alloy foam etc.These structures have higher specific energy absorption performance, but also have shortcoming separately, as manufacturing cost height, load to weight ratio and buffering efficient is low, bearing capacity is low, can not the classification energy-absorbing and the interface in conjunction with weakness etc.Though some patent documentations have also been addressed a lot of endergonic structures and material, almost directly do not utilize the honeycomb to do energy absorption device, more do not see to have and utilize the combination cellular structure to do energy absorption device.The present invention provides a kind of assembly energy-absorbing construction material and preparation method thereof after the parameter of metallic honeycomb sandwich structure and deformation rule are studied.
Summary of the invention
The object of the present invention is to provide a kind of metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof,, in carrying simultaneously, play the effect of crusherbull zone energy-absorbing as the structure member use of traffic delivery means.
Metallic honeycomb sandwich assembly energy-absorbing construction material provided by the invention comprises following parts: shell, the combination of metallic honeycomb sandwich body, dividing plate, metal solder layer, the combination of metallic honeycomb sandwich body is made up of 1～4 metallic honeycomb sandwich body, wherein to be regular hexagon cellular for the end face of each metallic honeycomb sandwich body, between the every metallic honeycomb sandwich body dividing plate is arranged, mutual crisscross combination, each parts links together by the soldering of metal solder layer.
Shell of the present invention comprises end cap and housing, and case body is rectangular tube or pipe.
The preparation method of metallic honeycomb sandwich assembly energy-absorbing construction material, this method comprises following content:
A. metal plate cold-bent is pressed into half regular hexagon corrugated plating, half regular hexagon corrugated plating is buckled together again, forming end face is cellular metallic honeycomb sandwich body;
B. dividing plate is selected the cold rolled metal thin plate for use;
C. shell adds the sheet metal end cap by common metal thin-walled square tube or pipe and makes;
D. utilize conventional acid or alkaline cleaner clean metal end cap, metal shell, metal partion (metp), metallic honeycomb sandwich body;
E. with 1～4 mutual crisscross combination of metallic honeycomb sandwich body, add metal partion (metp) between the every metallic honeycomb sandwich body, the metal solder layer is folded up between metal end, metal shell, metal partion (metp), metallic honeycomb sandwich body, and with the combination the metallic honeycomb sandwich body place in the metal shell, seal up with end cap at two ends, uses the metal end at clamp two ends then;
F. place in vacuum drying oven or the pure Ar atmosphere furnace and carry out heating soldering, when placing vacuum drying oven, cold conditions is evacuated down to 1 * 10
-1～1 * 10
-2More than the Pa, be heated to brazing temperature, be incubated 20～50 minutes and carry out soldering, take out the cooling back; In the time of in placing pure Ar atmosphere furnace, charge into the Ar protective gas, be heated to brazing temperature, be incubated 20～50 minutes and carry out soldering, take out the cooling back.
The present invention compared with prior art, its significant advantage is:
With the common metal thin plate is cellular structural material, and material source is extensive, and cost is low, and assembly energy-absorbing construction material promptly can be used as the Welding Structure bearing load, can be used as the buffering energy-absorbing parts again.The plasticity of metal and good toughness are clashed into back generation plastic yielding and the plastic buckling distortion can absorb lot of energy, and after optimal design, its load to weight ratio and buffering efficient can reach more than 90%.This combining structure helps classification and absorbs impact energy, and for some varying load impact events, crisscross combining structure can be resisted the bump of different directions; Classification slows down bump stroke; Classification dissipation impact energy; Adopt soldering to connect the bond strength that can improve between each part, each part can only be out of shape with plastic yielding and plastic buckling mode, prevent between each part to produce the phenomenon that shearing is scattered because of bond strength is low.
Description of drawings
Fig. 1 is the metallic honeycomb sandwich assembly energy-absorbing construction material schematic diagram that is made of a metallic honeycomb sandwich body; Fig. 2 is by two crisscross metallic honeycomb sandwich assembly energy-absorbing material schematic diagrames that constitute of metallic honeycomb sandwich body.
The specific embodiment
The preparation method of above-mentioned metallic honeycomb sandwich assembly energy-absorbing construction material, this method comprises following content:
A. with thickness be the rolled sheet metal clod wash of 0.25mm to become the cell wall length of side be the half regular hexagon corrugated plating of 7.5mm, forming end faces with 8 half such regular hexagon corrugated platings is cellular metallic honeycomb sandwich body.Total length is 200mm, and width is 68mm, and thickness is 54mm;
B. intercepted length is 200mm, cross dimensions be one section of the Q235 common straightcarbon steel thin-walled square tube of 1.0 * 56 * 70mm as housing, get the rolled sheet metal that thickness is 0.25mm, shear 2 thin plates that are of a size of 56 * 70mm as end cap;
C. utilize conventional acid solution clean metal end cap, metal shell, metallic honeycomb sandwich body;
D. cut soldering and connect used BAg72Cu metal solder paper tinsel, the metal solder layer is folded up between metal end, metal shell, metallic honeycomb sandwich body as the metal solder layer;
E. the metallic honeycomb sandwich body is placed in the metal shell, seal up with end cap at two ends, uses the metal end at clamp two ends then;
F. the material of handling well is placed in the vacuum drying oven, cold conditions vacuumizes and keeps vacuum to be in 1 * 10
-1～1 * 10
-2Between the Pa, be heated to 830～860 ℃, be incubated 20～40 fens clock times and carry out soldering, take out with the stove cool to room temperature after the soldering.
The preparation method of above-mentioned metallic honeycomb sandwich assembly energy-absorbing construction material, this method comprises following content:
A. be that to become the cell wall length of side be the trapezoidal wave card of 7.5mm for the rolled sheet metal clod wash of 0.25mm with thickness, form two metallic honeycomb sandwich bodies with 16 half such regular hexagon corrugated platings, wherein a total length is 132mm, width is 68mm, thickness is 54mm, another piece total length is 68mm, and width also is 68mm, and thickness is 54mm.
B. shear the cold rolled metal thin plate as dividing plate.
C. degree of intercepting is 200mm, cross dimensions be one section of the Q235 common straightcarbon steel thin-walled square tube of 1.0 * 56 * 70mm as housing, get the rolled sheet metal that thickness is 0.25mm, shear 2 thin plates that are of a size of 56 * 70mm as end cap.
D. utilize conventional acid solution clean metal end cap, metal shell, metal partion (metp), metallic honeycomb sandwich body.
E. with two mutual crisscross combinations of metallic honeycomb sandwich body, add metal partion (metp) between two metallic honeycomb sandwich bodies, BCu62Zn metal solder paper tinsel is put between two metallic honeycomb sandwich bodies, metal partion (metp), the thin-walled square tube; And with the combination the metallic honeycomb sandwich body place in the metal shell, seal up with end cap at two ends, uses the metal end at clamp two ends then.
F. the above-mentioned material of handling well is placed in the pure Ar atmosphere furnace, is heated to 900～920 ℃, be incubated 20～30 fens clock times and carry out soldering, take out with the stove cool to room temperature after the soldering.
Claims (3)
1. metallic honeycomb sandwich assembly energy-absorbing construction material, it is characterized in that this material comprises following parts: shell, the combination of metallic honeycomb sandwich body, dividing plate, metal solder layer, the combination of metallic honeycomb sandwich body is made up of 1～4 metallic honeycomb sandwich body, wherein to be regular hexagon cellular for the end face of each metallic honeycomb sandwich body, between the every metallic honeycomb sandwich body dividing plate is arranged, mutual crisscross combination, each parts links together by the soldering of metal solder layer.
2. the described metallic honeycomb sandwich assembly energy-absorbing construction material of claim 1 is characterized in that shell comprises end cap and housing, and housing is rectangular tube or pipe.
3. the preparation method of the described metallic honeycomb sandwich assembly energy-absorbing construction material of claim 1, this method comprises following content:
A. metal plate cold-bent is pressed into half regular hexagon corrugated plating, half regular hexagon corrugated plating is buckled together again, forming end face is cellular metallic honeycomb sandwich body;
B. dividing plate is selected the cold rolled metal thin plate for use;
C. shell adds the sheet metal end cap by common metal thin-walled square tube or pipe and makes;
D. utilize conventional acid or alkaline cleaner clean metal end cap, metal shell, metal partion (metp), metallic honeycomb sandwich body;
E. with 1～4 mutual crisscross combination of metallic honeycomb sandwich body, add metal partion (metp) between the every metallic honeycomb sandwich body, the metal solder layer is folded up between metal end, metal shell, metal partion (metp), metallic honeycomb sandwich body, and with the combination the metallic honeycomb sandwich body place in the metal shell, seal up with end cap at two ends, uses the metal end at clamp two ends then;
F. place in vacuum drying oven or the pure Ar atmosphere furnace and carry out heating soldering, when placing vacuum drying oven, cold conditions is evacuated down to 1 * 10
-1～1 * 10
-2More than the Pa, be heated to brazing temperature, the insulation certain hour carries out soldering, and take out the cooling back; In the time of in placing pure Ar atmosphere furnace, charge into the Ar protective gas, be heated to brazing temperature, the insulation certain hour carries out soldering, and take out the cooling back.
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| CNB2007100104871A CN100560350C (en) | 2007-02-23 | 2007-02-23 | Metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof |
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| CNB2007100104871A CN100560350C (en) | 2007-02-23 | 2007-02-23 | Metallic honeycomb sandwich assembly energy-absorbing construction material and preparation method thereof |
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| CN100560350C true CN100560350C (en) | 2009-11-18 |
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Cited By (1)
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|---|---|---|---|---|
| CN114396424A (en) * | 2021-12-24 | 2022-04-26 | 安徽日飞轴承有限公司 | Special reinforced bearing for self-lubricating high-temperature guide rail |
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