CN204831871U - Sample mould of disconnect -type HOPKINSON depression bar experiment - Google Patents
Sample mould of disconnect -type HOPKINSON depression bar experiment Download PDFInfo
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- CN204831871U CN204831871U CN201520458510.3U CN201520458510U CN204831871U CN 204831871 U CN204831871 U CN 204831871U CN 201520458510 U CN201520458510 U CN 201520458510U CN 204831871 U CN204831871 U CN 204831871U
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Abstract
The utility model discloses a sample mould of disconnect -type HOPKINSON depression bar experiment, including base and last mould, the base includes the bottom plate, goes up the mould and arranges the top surface at the bottom plate, going up the mould and including complex root mould strip, the amalgamation of complex root mould strip becomes the last mould of rectangle, the faying face of two piece adjacent mould strips is the die joint, and the die joint of mould strip includes a plurality of semicircular die cavities, and the semi -circular die cavity of two piece adjacent mould strips makes up into the die cavity of a plurality of cylindrical samples, the base includes clamping screw, blend stop and screw base, and the blend stop is fixed in the rear end of bottom plate, and screw base fixes the front end at the bottom plate, go up the mould and arrange between blend stop and screw base that screw base includes the screw hole, and clamping screw screw in screw hole, the clamping screw top is on the first root mould strip of last mould, and last mould strip of going up the mould supports on the blend stop. The utility model discloses a sample mould is convenient for make the minor diameter and is starched sample or mortar sample only, and the sample quantity of producing once is more, has simple, practical, convenient, economic advantage.
Description
[technical field]
The utility model relates to Split Hopkinson Pressure Bar Test, particularly relates to the sample mould of a kind of separate type HOPKINSON depression bar experiment.
[background technology]
Split Hopkinson Pressure Bar Test (sample mould of SHP separate type HOPKINSON depression bar experiment) can be used to measure the stress-strain relationship of material under impact loading, the theoretical foundation of this technology is one dimension elasticity theory of stress wave, it is by measuring the stress-strain relationship of the strain derivation sample material on depression bar, is one of the most basic experimental technique of research material dynamic mechanical.The principle of work that this device carries out material impact compression experiment acquisition stress-strain relationship is: test specimen is sandwiched between incident bar and transmission bar, by one end of the projectile impact incident bar of compressed air-driven in air gun, produce an elastic wave (incident wave) and propagate in incident bar.When incident wave passes to test specimen, whole test specimen will be compressed.Meanwhile, due to the wave impedance difference between bar and test specimen, incident wave is partially reflected as reflection wave returns to incident bar, and another part then enters transmission bar through test specimen as transmitted wave.By means of the foil gauge on incident bar and transmission bar, prime amplifier respectively by incident wave, reflection wave and transmitted wave are recorded on digital oscilloscope (or high dynamic strain indicator).
When the sample mould experimental technique of tradition SHP separate type HOPKINSON depression bar experiment is for testing metal material, be little bar, sample velocity of wave is very fast, stress is easy to balance, for common metal material, the plastic behavior impact of non-constant strain-rate on metal is limited, so above factor is little on experimental result impact.But in recent years, due to national defence and civilian needs, new engineering material continues to bring out out, and particularly soft material and compound substance are more and more subject to the attention in each field such as Aeronautics and Astronautics, military protection.Therefore the research object of the sample mould of SHP separate type HOPKINSON depression bar experiment develops into the heterogeneous material such as foam, concrete by the homogeneous material such as metal, superpolymer, these heterogeneous materials require that specimen size strengthens, but traditional SHPB test mould is mainly for metal material, can not be used for the test of cement cementitious material test, and sample quantities of producing once is less.
[summary of the invention]
The technical problems to be solved in the utility model be to provide a kind of sample quantities of producing once more, for make minor diameter only starch sample or mortar specimen separate type HOPKINSON depression bar experiment sample mould.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of sample mould of separate type HOPKINSON depression bar experiment, and comprise base and patrix, base comprises base plate, and patrix is arranged in the end face of base plate; Patrix comprises complex root mould bar, and complex root mould bar pieces together the patrix of rectangle; The faying face of adjacent two mould bars is die joint, and the die joint of mould bar comprises a plurality of semicircular die cavity, and the semicircle die cavity of adjacent two mould bars is combined into the die cavity of a plurality of cylindrical sample; Base comprises clamping screw, blend stop and screw base, blend stop is fixed on the rear end of base plate, screw base is fixed on the front end of base plate, patrix is arranged between blend stop and screw base, screw base comprises threaded hole, clamping screw screws in threaded hole, and clamping screw withstands on first mould bar of patrix, and last root mould bar of patrix is against on blend stop.
Above-described sample mould, base comprises side plate.The side that side plate is fixed on base plate is orthogonal with blend stop, and rear end and the blend stop of side plate are fixed; The side of patrix is against on side plate.
Above-described sample mould, patrix comprises complex root positioning key, and the two ends of mould bar die joint respectively comprise the detent vertically arranged, positioning key embeds in the detent of adjacent two mould bars, with one of them detent interference fit, be slidably matched with another detent.
Sample mould of the present utility model is convenient to make minor diameter, and only to starch sample or mortar specimen sample quantities of producing once more, has simple, practical, convenient, economic advantage.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the front view of the utility model embodiment sample mould.
Fig. 2 is the vertical view of the utility model embodiment sample mould.
Fig. 3 is the right view of the utility model embodiment sample mould.
Fig. 4 is that A in Fig. 1 is to cut-open view.
[embodiment]
The structure of the utility model embodiment separate type HOPKINSON depression bar experimental sample mould as shown in Figures 1 to 4, comprises base 100 and patrix 200.Base 100 comprises base plate 1, clamping screw 2, blend stop 3, side plate 4 and screw base 5, blend stop 3 is fixed by welding in the rear end of base plate 1, screw base 5 is fixed on the front end of base plate 1, side plate 4 is fixed by welding in the side of base plate 1, orthogonal with blend stop 3, the rear end of side plate 4 and blend stop 3 are by being welded and fixed.
Base plate is made up of steel, and length is 260mm, and width is 260mm, is highly 10mm.
Patrix 200 is arranged on the end face 101 of base plate 1, and patrix 200 is made up of steel, and length is 214mm, and width is 214mm, is highly 18mm, only starches for cast in situs.
Patrix 200 comprises the patrix 200 that 8 mould bars, 6,8 mould bars 6 piece together rectangle.The faying face of adjacent two mould bars 6 is die joint M, and the die joint M of mould bar 6 has 7 semicircular die cavity B1, and the semicircle die cavity of adjacent two mould bars 6 is combined into the die cavity B of 7 cylindrical samples; Patrix 200 is arranged between blend stop 3 and screw base 5, and screw base 5 has a threaded hole, and clamping screw 2 screws in threaded hole, and the head of clamping screw 2 withstands on first mould bar 6 of patrix 200, and last root mould bar 6 of patrix 200 is against on blend stop 3.
The side of patrix 200 is against on side plate 4.
Patrix 200 also comprises 14 positioning keys 8, respectively there is a detent vertically arranged at the two ends of mould bar 6 die joint M, positioning key 8 embeds in the detent of adjacent two mould bars 6, with one of them detent interference fit, is slidably matched with another detent.
When making sample, pour in the die cavity of patrix by the slurry be stirred, after fully vibrating, maintenance reasonable time removes patrix, carries out maintenance under sample can being put into the curing condition of regulation.
The sample mould of the above embodiment of the utility model is convenient to make minor diameter and is only starched sample or mortar specimen, and sample quantities of producing once is more, has simple, practical, convenient, economic advantage.
Claims (3)
1. a sample mould for separate type HOPKINSON depression bar experiment, comprise base and patrix, base comprises base plate, and patrix is arranged in the end face of base plate, it is characterized in that, patrix comprises complex root mould bar, and complex root mould bar pieces together the patrix of rectangle; The faying face of adjacent two mould bars is die joint, and the die joint of mould bar comprises a plurality of semicircular die cavity, and the semicircle die cavity of adjacent two mould bars is combined into the die cavity of a plurality of cylindrical sample; Base comprises clamping screw, blend stop and screw base, blend stop is fixed on the rear end of base plate, screw base is fixed on the front end of base plate, patrix is arranged between blend stop and screw base, screw base comprises threaded hole, clamping screw screws in threaded hole, and clamping screw withstands on first mould bar of patrix, and last root mould bar of patrix is against on blend stop.
2. sample mould according to claim 1, is characterized in that, base comprises side plate, and side plate is fixed on the side of base plate, orthogonal with blend stop, and rear end and the blend stop of side plate are fixed; The side of patrix is against on side plate.
3. sample mould according to claim 1, it is characterized in that, patrix comprises complex root positioning key, the two ends of mould bar die joint respectively comprise the detent vertically arranged, positioning key embeds in the detent of adjacent two mould bars, with one of them detent interference fit, be slidably matched with another detent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458510.3U CN204831871U (en) | 2015-06-29 | 2015-06-29 | Sample mould of disconnect -type HOPKINSON depression bar experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458510.3U CN204831871U (en) | 2015-06-29 | 2015-06-29 | Sample mould of disconnect -type HOPKINSON depression bar experiment |
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| CN204831871U true CN204831871U (en) | 2015-12-02 |
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| CN201520458510.3U Active CN204831871U (en) | 2015-06-29 | 2015-06-29 | Sample mould of disconnect -type HOPKINSON depression bar experiment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675370A (en) * | 2016-03-28 | 2016-06-15 | 中国石油天然气集团公司 | Method and mould for preparing traixial test sample of well-cementing cement stone |
| CN110160849A (en) * | 2019-06-13 | 2019-08-23 | 山西大学 | The mold of novel hotdisk cement-based material thermal coefficient specimen molding |
| CN111982737A (en) * | 2020-09-02 | 2020-11-24 | 中国矿业大学 | Preparation method of separated Hopkinson pressure bar test metal sample |
-
2015
- 2015-06-29 CN CN201520458510.3U patent/CN204831871U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675370A (en) * | 2016-03-28 | 2016-06-15 | 中国石油天然气集团公司 | Method and mould for preparing traixial test sample of well-cementing cement stone |
| CN110160849A (en) * | 2019-06-13 | 2019-08-23 | 山西大学 | The mold of novel hotdisk cement-based material thermal coefficient specimen molding |
| CN111982737A (en) * | 2020-09-02 | 2020-11-24 | 中国矿业大学 | Preparation method of separated Hopkinson pressure bar test metal sample |
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