CN105224746A - Based on the pulley of Adams software---the analogy method of rope type objects - Google Patents
Based on the pulley of Adams software---the analogy method of rope type objects Download PDFInfo
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Abstract
The invention provides a kind of pulley based on Adams software---the analogy method of rope type objects, comprising: set up straight line OA, arrange revolute rot1, and straight line OA is rotated in XOY plane around center of circle O; Set up straight line AB, revolute rot2 is set, make straight line AB around A point at YOZ rotation with in surface; Set up straight line AC, moving sets tran1 be set, make straight line AC linearly AB move; Set up right cylinder D1, D2, moving sets tran2, tran3 be set, make right cylinder D1 linearly AC move, make right cylinder D2 linearly AC move; Between right cylinder D1 and right cylinder D2, contact is set; Set up right cylinder D3, D4, fixed joint fix1, moving sets tran4 be set, right cylinder D3 and right cylinder D1 is fixed, make right cylinder D4 linearly AC move; Concentrated force Force1 is set between right cylinder D3 and right cylinder D4; Set up right cylinder D5, fixed joint fix2 is set, right cylinder D5 and straight line AC is fixed, right cylinder D5 arranges concentrated force Force2.This invention ensures that model accuracy, improve counting yield.
Description
Technical field
The present invention relates to mechanical system dynamical simulation technical field, particularly relate to a kind of pulley based on Adams software---the analogy method of rope type objects.
Background technology
The mechanical system dynamical simulation analysis software Adams (AutomaticDynamicAnalysisofMechanicalSystems of MSC company of the U.S., machinery system dynamics automatic analysis) be integrated moulding, solve, the motion simulation software of visualization technique one, be on our times usable range the most extensively, the most well-known machinery system dynamics Simulation Platform.Along with Virtual Prototype Technique is at the application and development of mechanical engineering field, Adams has been successfully applied to the fields such as Aero-Space, automobile engineering, rolling stock, industrial machinery, engineering machinery.Adams is to calculate based on dynamics of multibody systems, comprise the Development of Virtual Prototype system software of multiple professional module and professional domain, utilize it can set up the kinematics and dynamics modeling of complex mechanical system, its model can be rigid body, also can be flexible body, and hard and soft mixture model.
Pulley---rope mechanism is widely used usually in mechanical system, for transmitting force and displacement.The not direct instrument to this kind of large deformation object of rope Direct Modeling in Adams software, the method adopted at present is that rope is separated into some sections of small cylinders, and when the relatively whole rope lengths of each segment right cylinder is very little, rope just can be considered non-individual body; Connect by axle sleeve power between each segment right cylinder, embodied stiffness coefficient and the ratio of damping of rope by the tension and compression of definition axle sleeve power and torsional rigidity and damping parameter; By rope is separated into a section small cylinder, pulley etc. can be walked around and do certain curvilinear motion, between each small cylinder and pulley, add contact force.When rope be separated into small cylinder quantity abundant time, the stretch bending of rope and the slip etc. on pulley can be reflected comparatively truly.
This pulley---rope model in existing Adams, calculated amount is very huge, and wherein contain very many nonlinear contact, easily cause calculating not restrain and computing velocity crosses the problems such as slow, be not suitable for the pulley of simulation---the situation that a lot of or rope of tethered system quantity is grown very much.Rope type objects path is normally wrapped on pulley in addition, and directly in Adams software, modeling is also comparatively loaded down with trivial details.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of pulley based on Adams software is provided---the analogy method of rope type objects, pulley is set up in Adams software---rope model, by the kinematic relation between use mathematical relation simulation description rope and pulley and stressed relation, and solve the winding problem of rope and pulley.
For achieving the above object, the invention provides a kind of pulley based on Adams software---the analogy method of rope type objects, comprises the following steps:
Step 1: set up straight line OA, and arrange revolute rot1, makes straight line OA rotate in XOY plane around center of circle O;
Step 2: set up straight line AB, and arrange revolute rot2, makes straight line AB around A point at YOZ rotation with in surface;
Step 3: set up straight line AC, and moving sets tran1 is set, make straight line AC linearly AB move;
Step 4: set up right cylinder D1, and moving sets tran2 is set, make right cylinder D1 linearly AC move; Set up right cylinder D2, and moving sets tran3 be set, make right cylinder D2 linearly AC move; Between right cylinder D1 and right cylinder D2, contact is set;
Step 5: set up right cylinder D3, and fixed joint fix1 is set, right cylinder D3 and right cylinder D1 is fixed; Set up right cylinder D4, and moving sets tran4 be set, make right cylinder D4 linearly AC move; Concentrated force Force1 is set between right cylinder D3 and right cylinder D4;
Step 6: set up right cylinder D5, and fixed joint fix2 is set, right cylinder D5 and straight line AC is fixed; Right cylinder D5 arranges concentrated force Force2.
Compared with prior art, the invention has the beneficial effects as follows: for pulley---the different mechanical systems of rope mechanism, motion and the mechanical characteristic of its entirety and each mechanism can be analyzed, the elastic deformation of wire rope, weight transfer and the influence factor of the tensioning that relaxes are taken into full account, the accuracy simulated can be ensured, and simplify modeling method, improve counting yield.
Accompanying drawing explanation
Fig. 1 is pulley of the present invention---rope model schematic diagram;
Fig. 2 is the pulley of one embodiment of the invention---rope mechanism schematic diagram.
Embodiment
Below in conjunction with each embodiment shown in the drawings, the present invention is described in detail; but should be noted that; these embodiments are not limitation of the present invention; those of ordinary skill in the art are according to these embodiment institute work energy, method or structural equivalent transformations or substitute, and all belong within protection scope of the present invention.
As shown in Figure 1, Fig. 1 is pulley of the present invention---rope model schematic diagram.
Present embodiments provide a kind of pulley based on Adams software---the analogy method of rope type objects, concrete steps are as follows:
Step 1: set up straight line OA, and arrange revolute rot1, makes straight line OA rotate in XOY plane around center of circle O.By this step, rope can be swung in XOY plane.
Step 2: set up straight line AB, and arrange revolute rot2, makes straight line AB around A point at YOZ rotation with in surface.By this step, rope can be swung in YOZ plane.
Step 3: set up straight line AC, and moving sets tran1 is set, make straight line AC linearly AB move.By this step, rope is made to extend shortening.
Step 4: set up right cylinder D1, and moving sets tran2 is set, make right cylinder D1 linearly AC move; Set up right cylinder D2, and moving sets tran3 be set, make right cylinder D2 linearly AC move; Between right cylinder D1 and right cylinder D2, contact is set.By this step, the situation of simulation line relaxation.
Step 5: set up right cylinder D3, and fixed joint fix1 is set, right cylinder D3 and right cylinder D1 is fixed; Set up right cylinder D4, and moving sets tran4 be set, make right cylinder D4 linearly AC move; Concentrated force Force1 is set between right cylinder D3 and right cylinder D4.By this step, the elastic deformation of simulation rope.
Step 6: set up right cylinder D5, and fixed joint fix2 is set, right cylinder D5 and straight line AC is fixed; Right cylinder D5 arranges concentrated force Force2.By this step, the weight transfer of simulation rope.
The pulley that the present embodiment provides---the analogy method of rope type objects, motion and the mechanical characteristic of mechanical system can be analyzed, the elastic deformation of wire rope, weight transfer and the influence factor of the tensioning that relaxes are taken into full account, the accuracy simulated can be ensured, and simplify modeling method, improve counting yield.
Below by instantiation, the present invention is described in further detail.
This example is the kinematic behavior simulation of a certain large scale ship mechanical system, ship lift generally comprises much organizes pulley-rope member (as shown in Figure 2), and rope reaches tens meters, Adams software application discrete-time epidemic model pulley is adopted under existing design conditions---rope has almost been difficult to, this example adopts pulley of the present invention---and rope analogy method, to carry out the kinematic behavior simulation of ship lift system, comprises the steps:
1) set up the mechanical models such as ship reception chamber, damper weight, mechanical synchronization system, guidance system, and set up ship lift entire system Dynamics Simulation Model according to the motion between them and stressed transitive relation;
2) in mechanical synchronization system reel and damper weight, set up pulley-rope model (method according to above-mentioned steps 1-step 6) between reel and ship reception chamber respectively.
3) according to ship elevator parameter, respectively numerical simulation is carried out to ship lift system dynamic characteristic, obtain ship lift system ship reception chamber, synchronizing shaft, the motion of guidance system and mechanical characteristic.
Above-mentioned pulley-rope model method is adopted in Adams software, as follows to this ship lift system dynamics numerical simulation achievement:
(1) the maximum antidumping rigidity of ship lift system is 360960kN.m/deg, and be 6.86 times of the rigidity of toppling that in ship reception chamber, water body produces, ship lift system can keep stable;
(2) in ship elevator process, the maximum vertical equity deviation of ship reception chamber is 13.02mm, and peak torque suffered by synchro system is 61.22kN.m, and peak load suffered by guidance system is 591.19kN.
This enforcement by adopting pulley---the rope analogy method of above-mentioned steps 1-6 in the kinematic behavior simulation of large scale ship mechanical system, motion and the mechanical characteristic of mechanical system can be analyzed, the method has taken into full account the elastic deformation of wire rope, weight transfer and the influence factor of the tensioning that relaxes, the accuracy simulated can be ensured, and simplify modeling method, improve counting yield.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
Claims (1)
1. based on the pulley of Adams software---an analogy method for rope type objects, is characterized in that, comprises the following steps:
Step 1: set up straight line OA, and arrange revolute rot1, makes straight line OA rotate in XOY plane around center of circle O;
Step 2: set up straight line AB, and arrange revolute rot2, makes straight line AB around A point at YOZ rotation with in surface;
Step 3: set up straight line AC, and moving sets tran1 is set, make straight line AC linearly AB move;
Step 4: set up right cylinder D1, and moving sets tran2 is set, make right cylinder D1 linearly AC move; Set up right cylinder D2, and moving sets tran3 be set, make right cylinder D2 linearly AC move; Between right cylinder D1 and right cylinder D2, contact is set;
Step 5: set up right cylinder D3, and fixed joint fix1 is set, right cylinder D3 and right cylinder D1 is fixed; Set up right cylinder D4, and moving sets tran4 be set, make right cylinder D4 linearly AC move; Concentrated force Force1 is set between right cylinder D3 and right cylinder D4;
Step 6: set up right cylinder D5, and fixed joint fix2 is set, right cylinder D5 and straight line AC is fixed; Right cylinder D5 arranges concentrated force Force2.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106055749A (en) * | 2016-05-20 | 2016-10-26 | 哈尔滨工业大学（威海） | Method for increasing motion stability of link mechanism with clearance |
| CN106066908A (en) * | 2016-05-27 | 2016-11-02 | 哈尔滨工业大学（威海） | A kind of method improved containing gap satellite antenna drive mechanism kinetic stability |
| CN107545126A (en) * | 2017-09-28 | 2018-01-05 | 大连理工大学 | A kind of gathering tension integral structure dynamic response analysis method based on multi-body system sliding rope unit |
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| CN101798848A (en) * | 2010-03-05 | 2010-08-11 | 北京纽曼帝莱蒙膜建筑技术有限公司 | Method for dynamically simulating construction of tension structure by using mechanical movement simulation model |
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| CN101798848A (en) * | 2010-03-05 | 2010-08-11 | 北京纽曼帝莱蒙膜建筑技术有限公司 | Method for dynamically simulating construction of tension structure by using mechanical movement simulation model |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055749A (en) * | 2016-05-20 | 2016-10-26 | 哈尔滨工业大学（威海） | Method for increasing motion stability of link mechanism with clearance |
| CN106066908A (en) * | 2016-05-27 | 2016-11-02 | 哈尔滨工业大学（威海） | A kind of method improved containing gap satellite antenna drive mechanism kinetic stability |
| CN107545126A (en) * | 2017-09-28 | 2018-01-05 | 大连理工大学 | A kind of gathering tension integral structure dynamic response analysis method based on multi-body system sliding rope unit |
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Inventor after: Zhang Rui Inventor after: Gao Jianbiao Inventor after: Tao Lin Inventor after: Deng Jie Inventor after: Wu Yihong Inventor after: Zhang Dong Inventor after: Zhang Jinxiong Inventor after: Zhang Hongwei Inventor after: Zhang Wenyuan Inventor after: Wang Zhigang Inventor before: Zhang Rui Inventor before: Wu Yihong Inventor before: Deng Jie Inventor before: Zhang Dong Inventor before: Zhang Jinxiong Inventor before: Zhang Wenyuan Inventor before: Zhang Hongwei Inventor before: Gao Jianbiao Inventor before: Wang Zhigang |
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