The content of the invention
The applicant is for the shortcoming in above-mentioned existing production technology, there is provided a kind of Ship wave loads examination rational in infrastructureTest amount beam caliberating device, so as to.
The technical solution adopted in the present invention is as follows：
A kind of Ship wave loads test measurement beam caliberating device, including two loading stool for supporting being arranged at intervals with, it is described to addThe top for carrying stool for supporting is provided with bracing frame, and measurement beam is placed with support frame as described above, and the two ends of the measurement beam are nested with respectivelyThe bottom for having loading frame, the loading frame applies counterweight.
As the further improvement of above-mentioned technical proposal：
It is described loading frame structure be：Including four right angle frames, four right angle frames surround quadrilateral structure, each right angleLoading loop orbit is provided with the middle of frame, the first extension rod is installed in the loading loop orbit of two neighboring right angle frame, described first prolongsStock is fixed on right angle frame by lock-screw；Two upper lateral parts of the loading frame are separately installed with torsion loaded ring, describedOne middle side part of loading frame is provided with horizontal addload ring, and two side lower parts of the loading frame are separately installed with Plumb load ring；
The structure of support frame as described above is：Pull bar, eight pull bars surround quadrilateral structure, and the corner of two pull bars that are connected is by welderingConnect in succession, in the middle of every pull bar, be provided with chute, the second extension rod is installed in the middle of the chute of adjacent two pull bars, described second prolongsStock is fixed on pull bar by clamping screw；
It is described loading stool for supporting structure be：Including supporting table, the supporting table bottom is by they sup-port, the support barBottom is provided with bracing piece.
Beneficial effects of the present invention are as follows：
Present configuration is compact, reasonable, easy to operate, by special caliberating device, can obtain easily and fast and meetVertical, horizontal inertial square and moment of torsion are similar to real ship, and can ensure that torsional centre is similar to real ship；Caliberating device can be to testThe relation that measurement beam is respectively measured between the seaway load that the strain of section and ship section are subjected to is demarcated.
The present invention can measure the opening measurement beam and ship model wave load test of vertical, horizontal bending moment and moment of torsion simultaneouslyThe caliberating device and decoupling method of measurement beam.The measurement beam of the cross-section structure form can meet vertical, horizontal rigidity simultaneously withAnd the geometric similarity of torsional rigidity and torsional centre, the device can measurement section each to test beam the ripple that is subjected to of strain and ship sectionRelation between wave load is demarcated.Fig. 1 is scheme of installation of the measurement beam on ship model.In figure, ship model is divided into 4 sections, surveysAmount beam is connected with hull crossing frame by bolt, on three load measurement sections by the foil gauge pasted on measurement beam comeThe wave force that measurement ship model is subjected to（Vertical bending Mv, horizontal bending moment Mh and moment of torsion Mt）.
Description of the drawings
Fig. 1 is present invention measurement scheme of installation of the beam on ship model.
Sectional views of the Fig. 2 for Fig. 1.
Fig. 3 is the structural representation of crossing frame of the present invention.
Fig. 4 is the front view of caliberating device of the present invention.
Fig. 5 is the front view of present invention loading frame.
Side views of the Fig. 6 for Fig. 5.
Fig. 7 is the structural representation after present invention loading frame extends.
Fig. 8 is the top view of bracing frame of the present invention.
Fig. 9 is the top view after bracing frame of the present invention extends.
Figure 10 is the front view of bracket stool of the present invention.
Side views of the Figure 11 for Figure 10.
Figure 12 is present invention measurement section forms of beam and point layout figure.
Wherein：1st, ship model；2nd, measure beam；3rd, shell；4th, reinforced frame；5th, backing plate；6th, trip bolt；7th, crossing frame；8、Bracing frame；9th, load stool for supporting；10th, load frame；11st, right angle frame；12nd, the first extension rod；13rd, lock-screw；14th, loaded ring railRoad；15th, horizontal addload ring；16th, reverse loaded ring；17th, Plumb load ring；18th, pull bar；19th, the second extension rod；20th, locking screwBolt；21st, supporting table；22nd, support bar.
Specific embodiment
Below in conjunction with the accompanying drawings, illustrate the specific embodiment of the present invention.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the Ship wave loads test measurement beam caliberating device of the present embodiment, includingShip model 1, installs measurement beam 2 in ship model 1,3 one-tenth concave shape structures of shell of ship model 1 are provided with multiple adding inside 1 shell 3 of ship modelStrong frame 4, reinforced frame 4 form hollow structure with the two ends of shell 3, and the internal face of reinforced frame 4 is by backing plate 5 and fastening spiral shellNail 6 is provided with crossing frame 7；Measurement beam 2 caliberating device be：Including two loading stool for supporting 9 being arranged at intervals with, loading is supportedThe top of stool 9 is provided with bracing frame 8, and measurement beam 2 is placed with bracing frame 8, and the two ends for measuring beam 2 are equipped with loading frame respectively10, the bottom for loading frame 10 applies counterweight.
As shown in Fig. 5, Fig. 6 and Fig. 7, the structure for loading frame 10 is：Including four right angle frames 11, four right angle frames 11 are surroundedQuadrilateral structure, is provided with loading loop orbit 14, in the loading loop orbit 14 of two neighboring right angle frame 11 in the middle of each right angle frame 11First extension rod 12 is installed, the first extension rod 12 is fixed on right angle frame 11 by lock-screw 13；The both sides of loading frame 10Top is separately installed with torsion loaded ring 16, and the middle side part for loading frame 10 is provided with horizontal addload ring 15, loads the two of frame 10Side lower part is separately installed with Plumb load ring 17.
As shown in Figure 8 and Figure 9, the structure of bracing frame 8 is：Pull bar 18, eight pull bars 18 surround quadrilateral structure, and connected twoThe corner of root pull bar 18 is provided with chute, in the middle of the chute of adjacent two pull bars 18 by being welded to connect in the middle of every pull bar 18Second extension rod 19 is installed, the second extension rod 19 is fixed on pull bar 18 by clamping screw 20.
As shown in Figure 10 and Figure 11, the structure of loading stool for supporting 9 is：Including supporting table 21,21 bottom of supporting table is by propping upStrut 22 is supported, and 22 bottom of support bar is provided with bracing piece.
The present invention allows to demarcate the measurement beam of differing heights and width, and vertical and horizontal direction by extension rodLoaded ring be fixed on extension rod, and as horizontal direction loaded ring respectively has a loaded ring that can be slided up and down, with fullThe loading of foot difference depth of neutral axis is required.
Measurement beam be installed on ship model before, need to each measurement section vertical bending Mv, horizontal bending moment Mh andMoment of torsion Mt carries out straining-demarcation of bending moment coefficients.
Since it is desired that meeting vertical, horizontal rigidity and torsional rigidity is similar with torsional centre, therefore devise the section shape in Fig. 2The measurement beam of formula, and the arrangement of measuring point is carried out in corresponding position.Foil gauge S1～S8 is along beam axial direction（Length direction）PasteIn beam surface, demarcation is connected through with full-bridge, vertical bending Mv is obtained by S5 and S6, horizontal bending moment is obtained by S7 and S8Mh, obtains torque Mt by S1 and S2 or S3 and S4.
When demarcating vertical and horizontal bending moment coefficient simultaneously, measurement beam is freely supported on support is demarcated, additionally, loading frame away fromL is with a distance from the support of two ends, measurement beam is placed on the center of caliberating device and ensures that two ends are symmetrical.
When individually demarcating torque coefficient, measurement beam is freely supported on support is demarcated.Additionally, loading frame is supported apart from two endsDistance be L, measure beam and be placed on the center of caliberating device and ensure that two ends are symmetrical.
Load vertical, level and torsional load simultaneously, for obtaining, during the response under the effect of intercoupling of three load, surveyingAmount beam freely supports that on support is demarcated mounting means is as shown in Figure 9 and Figure 10.Additionally, loading frame apart from two ends support away fromFrom L is, measurement beam is placed on the center of caliberating device and ensures that two ends are symmetrical.
For vertical load and horizontal direction load demarcation when, the hierarchical loading counterweight first on weight tray, such as 0,P, 2P, 3P, 4P, 5P, 4P, 3P, 2P, P and 0, unit are N, while applying dynamic strain indicator（Such as DH5920）And computer acquisitionThe strain of each measurement section exports UL0, UL1, UL2, UL3, UL4, UL5, UL6, UL7, UL8, UL9 and UL10, and unit is。Such one group of load loaded.Repeat loading 3 times.
During for being applied with the demarcation of torsional load, the hierarchical loading counterweight first on weight tray, such as 0, P, 2P, 3P,4P, 5P, 4P, 3P, 2P, P and 0, unit are N, while applying dynamic strain indicator（Such as DH5920）Respectively measurement is cutd open with computer acquisitionThe strain in face exports UL0, UL1, UL2, UL3, UL4, UL5, UL6, UL7, UL8, UL9 and UL10, and unit is.Then will turn roundReprint lotus Opposite side loading, also in hierarchical loading counterweight on weight tray, such as 0, P, 2P, 3P, 4P, 5P, 4P, 3P, 2P, P and0, unit is N, while applying dynamic strain indicator（Such as DH5920）With computer acquisition respectively measure section strain output UL0,UL1, UL2, UL3, UL4, UL5, UL6, UL7, UL8, UL9 and UL10, unit is.Such one group of load loaded.WeightIt is added with and carries 3 times.
During data analysiss, each group of loading result is fitted using method of least square.
For 3 coefficients, MV1i, MV2i, MV3i are obtained during vertical demarcation, unit is, each segmentationCalibration coefficient CVi=[the MV1i+MV2i+MV2i] × L/3 of vertical MVi, unit is, i=1,2 ..., i is what is demarcatedSection is numbered, and L is the distance for loading frame to support Support Position.
3 coefficients, MH1i, MH2i, MH3i, the mark of the horizontal MHi of each segmentation are obtained when horizontal direction is demarcatedDetermine coefficient CHi=[MH1i+MH2i+MH2i] × L/3, unit is, i=1,2 ..., i is that the section demarcated is numbered, LTo load frame to the distance of support Support Position.
During the demarcation reversed for independent, 6 coefficients are obtained, Mt11i, Mt12i, Mt13i, Mt21i, Mt22i, Mt23i,Unit is, each segmentation torque Mti calibration coefficient Cti=[（Mt11i- Mt21i）+（Mt12i- Mt22i）+(Mt13i-Mt23i)] × B/6, unit is, i=1,2 ..., i is the section numbering demarcated, and B is load to torsional centreDistance.
For vertical, horizontal bending moment and the same timing signal of moment of torsion, because there is coupling in moment of torsion and level and vertical bendingEffect, it is therefore desirable to first by demarcating the vertical strain Strj1i for obtaining with horizontal bending moment now, it is determined that and then demarcating verticalStrain value Strj2i, wherein j=1,2,3,4 under being demarcated with horizontal bending moment and moment of torsion simultaneously is numbered for measuring point, i=1, and 2,3 ... number for section.According to the strain value that 4 groups of different loads ratios apply to obtain, S1 is determined by the fitting of formula below,The coupling strain of S2, S3 and S4, wherein Mh, MV are the load of loading, and Kij is coefficient, are determined according to 4 groups of different load proportionsCorresponding coefficient.
Strj1i’=kj1i×Mh+kj2i×Mv+kj3i×Mh×Mv；
Finally according to warpage strain for Mtsji=Strj2i-Strj1i-Str1i ', finally obtain warpage strain under the state andThe corresponding relation of moment of torsion, Ctji=Mtsji × B/2.
Above description is explanation of the invention, is not the restriction to inventing, and limited range of the present invention is referring to rightRequire, within protection scope of the present invention, any type of modification can be made.