CN110362875A - The digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element - Google Patents
The digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element Download PDFInfo
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Abstract
The present invention relates to a kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element in traffic accident security fields, the following steps are included: establishing standard digital dummy model library, each physical feeling model of multi-rigid body digital dummy and each physical feeling model of standard finite element digital dummy are separately included；Design new standard digital dummy model, LS-DYNA module is selected in the coupling software of Madymo, and hinge is defined in coupling module and adjusts contact, complete new standard digital dummy model is generated using standard multi-rigid body and each position number dummy model of standard finite element, new model is verified finally by coupling Simulation calculating；Output new standard digital dummy collision parameter is simultaneously verified.The advantages of present invention passes through couple solution calculation method, can give full play to two software significantly enhances the robustness that the simulation of digital dummy model collision calculates.
Description
Technical field
The present invention relates to traffic accident security fields, specially a kind of number calculated based on multi-rigid body and Coupled with Finite Element
Dummy model modeling method.
Background technique
Traffic accident safety problem with the rapid development of the automotive industry, is increasingly valued by people, and is always
Automotive development quotient compare concern, and pedestrian is in the one side of weak tendency in traffic accident, often than in automobile
Driver is easier to be hurt, therefore realizes that traffic accident recombination reproduction has vehicle safety exploitation and pedestrian protecting etc.
How important meaning then reduces and has become every country in traffic accident collision to the damage of pedestrian and conduct a research one after another
With it is to be solved the problem of.
Since true human body cannot use in the crash tests of real world, so dummy model is unique feasible
Selection, and their use is all mandatory and standard.Crash dummy is divided into physics dummy and digital dummy, and with
The development of technology, two kinds of dummy models are all constantly updating improvement.Physics dummy due to subjects shortage and use corpse
Test existing ethics problem, it is difficult to be unfolded large-scale development and application, therefore people are generally by means of using human digit
Dummy model carries out numerical simulation.By combining emulation crash analysis and biomechanical analysis, researcher can be promoted to damage human body
The understanding how wound occurs, this, which is towards, creates the most important step that safer automobile and road step.Although true
In the crash tests in the world, human body can not replace physics dummy, but in virtual collision simulation, the numerical model of human body can be very
Easily replace the numerical model of physics dummy.
Under the positive support of countries in the world traffic safety mechanism, digital dummy model actively develops, with Numerical-Mode
Quasi- the same, digital dummy requires that equalization point must be found between computational efficiency, the robustness of execution and precision.Existing number
Dummy model is divided into two classes, and one is using HybridIII as the standard multi-rigid body digital dummy model of representative, this model structure is simple
It is single, have the characteristics that computational efficiency is high but precision is low；There are also one is using THUMS as the standard finite element digital dummy mould of representative
Type, this model structure is complicated, has the characteristics that computational efficiency is low but with high accuracy.Therefore there is an urgent need to establish one kind to expire now
Sufficient computational efficiency and precision problem and the digital dummy model for considering its robust performance simultaneously, this digital dummy model can satisfy
Under the premise of guaranteeing computational accuracy, while occupying least computer time and resource and there is preferable robust performance.
Existing technical literature is retrieved and is found, there are exploitation digital dummy model in many colleges and universities and scientific research institution, but big
Majority is all pure multi-rigid body or pure finite element digital dummy model, wherein generally approving in the world and generic validation
Multi-rigid body digital dummy model be that Dutch national science research institute (being purchased by Siemens) is researched and developed
HybridIII digital dummy model, and most standard and complete finite element digital dummy model are Japanese Toyota Company's exploitations
THUMS finite element digital dummy model, to the digital dummy based on finite element and multi-rigid body coupling almost without, it is difficult to meet imitative
The requirement of true precision and efficiency.Number of patent application is 200910054905.6 entitled " combined modular variable parameter digital vacations
The method that people establishes ", the combined modular variable parameter digital dummy which provides a kind of technical field of traffic transportation are established
Method, finite element and each position of multi-rigid body digital dummy model including establishing standard, and to the parameter of dummy model carry out
Personalization defines and carries out kinematics and dynamic (dynamical) verifying to combined type digital dummy, and it is fixed to be finally standardized to model
Justice come meet accident identification actual needs, improve computation rate.But used finite element digital dummy model is excessively
Simply, the damage of blood vessel, interior fat of human body etc. cannot be simulated well；And computational accuracy is not high, computational accuracy not only takes
Certainly in the precision of digital dummy model, there are also the precision for emulating solving model and solver, change patent and have only used Madymo how rigid
Body solver goes to solve, although can calculate finite element part in Madymo software, with LS-DYNA finite element solving device phase
Than, still have certain low precision away from；And the dummy that this method is established does not use coupling, due to Madymo software
In material model ratio LS-DYNA software in material model it is few very much, this meeting so that finite element digital dummy model material
It is lacked much in importeding into Madymo software, and material model is exactly the most important component part of finite element digital dummy, because
This digital dummy model established simultaneously does not meet international standard；And its digital dummy model only has 50 percentile males and 05
Percentile women digital dummy model, without standard compliant 3 years old and 6 years old children's digital dummy and 95 percentile large scale males
Digital dummy model lacks versatility and generality.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide one kind is calculated based on multi-rigid body and Coupled with Finite Element
Digital dummy model modelling approach, to solve the problems mentioned in the above background technology, this method mentality of designing is simple and skill
There is feasibility in art, various postures at any time after human body collides can not only be simulated, and can be according to actual needs
True reflection body local degree of impairment, can satisfy digital dummy to computational efficiency, computational accuracy and robust performance
It is required that.
A kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element provided according to the present invention,
The following steps are included:
S1, it establishes standard digital dummy model library: establishing the standard multi-rigid body number for separately including each physical feeling model
Dummy model library and standard finite element digital dummy model library；
S2, design new standard digital dummy model: LS-DYNA module is selected in the coupling software of Madymo, and in coupling
Hinge is defined in molding block and adjusts contact, it is false by each position number of the standard multi-rigid body and standard finite element of the step S1
People's model generates complete new standard digital dummy model, and new standard dummy model is applied in traffic accident recombination, leads to
Overcoupling simulation calculation verifies new standard digital dummy model；
S3, output digital dummy collision parameter: using the new standard digital dummy model and its in true traffic thing
L-G simulation test in therefore exports and verifies the collision parameter of new standard digital dummy, verify its biomethanics damage whether with method
Cure identification truth it is consistent, and by its athletic posture and fracture cloud atlas respectively with pure standard multi-rigid body digital dummy and pure mark
The simulation result of almost finite member digital dummy compares verifying.
In some embodiments, each site model of the step S1 Plays multi-rigid body digital dummy is by logical to the world
HybridIII standard multi-rigid body digital dummy is split and is obtained.
In some embodiments, each site model of standard multi-rigid body digital dummy includes that 05 percentile standard women is more
Rigid body digital dummy, 50 percentiles standard male multi-rigid body digital dummy of medium height, 95 percentile large scale standard males are more
Rigid body digital dummy, 3 years old normal child multi-rigid body digital dummy, 6 years old normal child multi-rigid body digital dummy.
In some embodiments, each site model of the step S1 Plays finite element digital dummy is by THUMS
International standard finite element digital dummy is split and is obtained.
In some embodiments, each site model of standard finite element digital dummy includes that 05 percentile standard women has
The first digital dummy of limit, 50 percentiles standard male finite element digital dummy of medium height, 95 percentile large scale standard males have
Limit first digital dummy, 3 years old normal child finite element digital dummy, 6 years old normal child finite element digital dummy.
In some embodiments, the step S2 specifically includes the following steps:
A, model import: according to the human body type for actually occurring traffic accident, by the finite element for including in LS-DYNA number
The multi-rigid body digital dummy model .xml file for including in dummy model .k file and Madymo is directed respectively into Madymo's
In Coupling Assistant module；
B, coupling setting: the Coupling Assistant module in Madymo passes through hinge, contact and adjustment dummy
The couplings such as position generate new standard digital dummy model, and new standard digital dummy model is arranged simultaneously and reappears in traffic accident
In emulation with the coupling on vehicle and ground etc.；
C, coupling calculate: can be generated according to the whole coupling model of the step B finite element set and multi-rigid body
.cpr file is submitted Madymo solver and LS-DYNA solver to carry out solution calculating by one .cpr file respectively, and two are asked
Solution device will carry out data transmission and couple calculating according to .k file and .xml file and the .cpr file set.
In some embodiments, hinge is defined described in the step S2 in coupling module and adjusts the specific of contact
Method is as follows:
First, standard finite element digital dummy model and auto model position are adjusted, then imported into coupling module；
Second, standard multi-rigid body digital dummy model is imported, replaces mark with standard finite element digital dummy model position
Quasi- multi-rigid body digital dummy model lacks position；
Third adjusts the position of standard multi-rigid body digital dummy model, by hinge setting that standard finite element number is false
People's model and standard multi-rigid body digital dummy model connect, and generate new standard digital dummy model；
4th, the contact between finite element and finite element and finite element and multi-rigid body is set, it is false to stablize new standard number
The setting of people's model and entire model prevents occurring the bad phenomenons such as negative volume and hourglass in simulation process.
In some embodiments, the step S3 specifically includes the following steps:
I exports collision parameter: by trying practical application of the new standard digital dummy model in traffic accident
It tests, as unit of the time, the new standard digital dummy model was being collided in the form of colliding posture, curve and damage figure
Collision parameter in journey is exported；
II, verifying new standard digital dummy model carry out: at any time by the new standard digital dummy model of step I output
Between athletic posture and finite element fracture cloud atlas it is false with pure standard multi-rigid body digital dummy and pure standard finite element number respectively
People's model compares, and compares with the wounded's actual conditions of forensic identification in true traffic accident, entire to verify
The Stability and veracity of model.
In some embodiments, in the step II:
If the athletic posture of new standard digital dummy model at any time and pure standard multi-rigid body digital dummy model are at any time
Athletic posture be consistent and new standard digital dummy model finite element fracture cloud atlas and pure standard finite element digital dummy model bone
Folding cloud atlas is consistent, then new standard digital dummy model meets the requirements, collision parameter needed for exporting digital dummy, then collision is damaged
Hurt parameter to be compared with forensic identification result, further verifies the stability of entire collision model；
If new standard digital dummy model is undesirable, step S2, the Coupling in Madymo are returned to
Assistant module resets hinge, contact and adjustment dummy position, and repeats the operation of step S2 to step S3.
A kind of computer readable storage medium being stored with computer program, when the computer program is executed by processor
The step of realizing method described in any one of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1. finite element digital dummy model is the THUMS digital dummy model of standard in the world, possess complete and fine
The various organs of human body and tissue, including blood vessel, interior fat etc., therefore simulation precision is very high, to ensure that newly-established
The precision of digital dummy model improves the computational accuracy of entire model；
2. finite element digital dummy file is the .k file of standard, finite element model portion is carried out using LS-DYNA solver
The solution divided, computational accuracy is higher, and multi-rigid body digital dummy file is the .xml file of standard, uses Madymo solver meter
It calculates, computational efficiency is high, therefore couple solution calculation method further improves calculating essence while ensure that computational efficiency
Degree；
3. couple solution calculation method, the advantages of two software can be given full play to, digital dummy mould is significantly enhanced
The robustness that type impact simulation calculates.
4. the foundation of new standard digital dummy model is established in the Coupling Assistant module of Madymo,
It is not simple that finite element is imported into Madymo, therefore remain the complete material setting of finite element digital dummy and belong to
The characteristics such as property, to ensure that the standard of newly-established digital dummy.
5. new standard digital dummy model contains adult male's digital dummy of medium height, adult large scale male number
Children's digital dummy of dummy, adult female digital dummy and all ages and classes have higher versatility and generality.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
The digital dummy model modelling approach block diagram that Fig. 1 reflection is calculated based on multi-rigid body and Coupled with Finite Element.
The digital dummy model modelling approach program flow diagram that Fig. 2 reflection is calculated based on multi-rigid body and Coupled with Finite Element.
Fig. 3 reflects that different solvers correspond to different digital dummy solution efficiency and precision summation contrast schematic diagram.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
To achieve the above object, the invention provides the following technical scheme: a kind of calculated based on multi-rigid body and Coupled with Finite Element
Digital dummy model modelling approach, comprising the following steps: S1, establish standard digital dummy model library: establishing standard multi-rigid body
Digital dummy model library and standard finite element digital dummy model library, separately include each physical feeling of multi-rigid body digital dummy
Each physical feeling model of model and standard finite element digital dummy；The new standard digital dummy model of S2, design:
LS-DYNA module is selected in the coupling software of Madymo, and defines hinge in coupling module and adjusts contact, passes through the step
Each position number dummy model of rapid 1 standard multi-rigid body and standard finite element generates complete new standard digital dummy model, and
New standard dummy model is applied in traffic accident recombination, new model is verified by coupling Simulation calculating；S3, output
Digital dummy collision parameter: using the obtained new standard digital dummy model of the step S1 and the step S2 and its true
L-G simulation test in real traffic accident exports and checks the collision parameter of new standard digital dummy, verifies the damage of its biomethanics
It is whether consistent with the truth of forensic identification and its athletic posture and fracture cloud atlas is false with pure standard multi-rigid body number respectively
The simulation result of people and pure standard finite element digital dummy compares verifying.
A kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element provided according to the present invention,
The step S1 is specifically includes the following steps: (1) obtains each site model of standard multi-rigid body digital dummy: to international
HybridIII standard multi-rigid body digital dummy is split, including 05 percentile standard women multi-rigid body digital dummy, 50 percentages
Position standard male multi-rigid body digital dummy of medium height, 95 percentile large scale standard male's multi-rigid body digital dummies, 3 years old standard
Children's multi-rigid body digital dummy, 6 years old normal child multi-rigid body digital dummy split obtain above five kinds of standards multi-rigid body number respectively
The corporal parts model of word dummy；(2) each site model of standard finite element digital dummy is obtained: to THUMS international standard
Finite element digital dummy is split, including 05 percentile standard women finite element digital dummy, 50 percentiles mark of medium height
Quasi- male's finite element digital dummy, 95 percentile large scale standard male's finite element digital dummies, 3 years old normal child finite element number
Word dummy, 6 years old normal child finite element digital dummy split obtain the body of above five kinds of standard finite element digital dummies respectively
Each site model.
A kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element provided according to the present invention,
The step S2 is specifically includes the following steps: (1) model imports: according to the human body type for actually occurring traffic accident, by LS-
The multi-rigid body digital dummy model .xml text for including in the finite element digital dummy model .k file and Madymo for including in DYNA
Part is directed respectively into the Coupling Assistant module of Madymo；(2) coupling setting: the Coupling in Madymo
Assistant module generates new standard digital dummy model by couplings such as hinge, contact and adjustment dummy positions, and simultaneously
New standard digital dummy model is set and reappears the coupling in emulation with vehicle and ground etc. in traffic accident；(3) coupling calculates: root
A .cpr file can be generated in the whole coupling model of the finite element and multi-rigid body that set according to the step (2), by .cpr
File submits Madymo solver respectively and LS-DYNA solver carries out solution calculating, and two solvers will be according to .k file
Carry out data transmission and couple calculating with .xml file and the .cpr file set.
A kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element provided according to the present invention,
The step S3 is specifically includes the following steps: (1) exports collision parameter: the new standard obtained by the step S1 and step S2
Practical application test of the digital dummy model in traffic accident, as unit of the time, to collide posture, curve and damage figure etc.
Form exports collision parameter of the new standard digital dummy model in collision process；(2) false to new standard number
People's model is verified: by the new standard digital dummy model athletic posture at any time of the step (1) output and limited
Member fracture cloud atlas compared respectively with pure standard multi-rigid body digital dummy and pure standard finite element digital dummy model, and with it is true
The wounded's actual conditions of forensic identification compare in real traffic accident, to verify the Stability and veracity of entire model.
A kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element provided according to the present invention,
The step S2 defines hinge in coupling module, and the specific method is as follows with contact is adjusted: (1) first standard finite element number
Word dummy model and auto model position are adjusted, then are imported into coupling module；(2) it is false secondly to import standard multi-rigid body number
People's model replaces standard multi-rigid body digital dummy model with standard finite element digital dummy model position and lacks position；(3) again
The position of adjustment standard multi-rigid body digital dummy model is arranged by other connections such as hinge by standard finite element digital dummy mould
Type and standard multi-rigid body digital dummy model connect, and generate new standard digital dummy model；(4) finite element is finally set
The setting of new standard digital dummy model and entire model is stablized in contact between finite element and finite element and multi-rigid body,
Prevent occurring the bad phenomenons such as negative volume and hourglass in simulation process.
Now by taking leg portion unilateral in 50 percentile male's dummy models is finite element model as an example, to summary of the invention into
Row is described in detail:
The present invention provides a kind of technical solution: a kind of digital dummy model calculated based on multi-rigid body and Coupled with Finite Element is built
Mould method is design method block diagram comprising following steps as shown in Figure 1:
1, it establishes standard digital dummy model library: establishing standard multi-rigid body digital dummy model library and standard finite element number
Dummy model library, separately include multi-rigid body digital dummy each physical feeling model and standard finite element digital dummy it is each
A physical feeling model；
(1) each site model of standard multi-rigid body digital dummy is obtained: medium to 50 percentiles of international HybridIII
Stature standard male's multi-rigid body digital dummy is split, its unilateral leg portion is removed, is obtained in addition to unilateral thigh
The corporal parts model of multi-rigid body digital dummy；
(2) obtain each site model of standard finite element digital dummy: 50 percentiles international to THUMS are of medium height
Standard male's finite element digital dummy is split, its unilateral leg portion is removed, finite element unilateral side leg portion is obtained
Model.
2, it designs new standard digital dummy model: selecting LS-DYNA module in the coupling software of Madymo, and in coupling
Hinge is defined in molding block and adjusts contact, it is false by each position number of the standard multi-rigid body and standard finite element of the step 1
People's model generates complete new standard digital dummy model, and new standard dummy model is applied in traffic accident recombination, leads to
Overcoupling simulation calculation verifies new model；
(1) model imports: the unilateral thigh finite element digital dummy model .k file and Madymo that will include in LS-DYNA
In include the multi-rigid body digital dummy model .xml file in addition to unilateral thigh be directed respectively into the Coupling of Madymo
In Assistant module；
(2) coupling setting: how rigid the Coupling Assistant module in Madymo is by hinge, contact and adjustment
Body digital dummy position, by unilateral thigh finite element digital dummy model and the multi-rigid body digital dummy model coupling in addition to unilateral thigh
It is combined, generates new standard digital dummy model, and new standard digital dummy model is set simultaneously and is reappeared in traffic accident
In emulation with the coupling on vehicle and ground etc.；
(3) coupling calculates: the whole coupling model of the finite element and multi-rigid body that are set according to the step (2) can give birth to
At a .cpr file, Madymo solver and LS-DYNA solver is submitted to carry out solution calculating respectively .cpr file, two
Solver will carry out data transmission and couple calculating according to .k file and .xml file and the .cpr file set, due to
Finite element model part generally occupies one to two positions (such as unilateral thigh and shank) of entire manikin, therefore data
Transmission process will not occupy the too many time, and computational efficiency and precision are as shown in Figure 3, it is evident that it can be seen that in all models
In corresponding all method for solving, coupling is calculated and the sum of the efficiency based on multi-rigid body and FEM coupling model and precision are most
It is high, i.e. the equalization point that can be optimal between the computational efficiency and precision of digital dummy model of couple solution.
3, it exports and verifies new standard digital dummy collision parameter: the new mark obtained using the step 1 and the step 2
Quasi- digital dummy model and its l-G simulation test in true traffic accident, export and check the collision of new standard digital dummy
Parameter, verify its biomethanics damage it is whether consistent with the truth of forensic identification, and by its athletic posture and fracture cloud atlas
The simulation result with pure standard multi-rigid body digital dummy and pure standard finite element digital dummy compares verifying respectively.
(1) export collision parameter: the new standard digital dummy model obtained by the step S1 and step S2 is in traffic
Practical application test in accident, output digital dummy model collision posture at any time, head H IC value equivalent damage curve, greatly
Fracture of leg damages the cloud atlas such as pressure；
(2) new standard digital dummy model is verified: the new standard digital dummy model that the step (1) is exported
Athletic posture and finite element fracture cloud atlas and pure standard multi-rigid body digital dummy and pure standard finite element number at any time is false
People's model compares, and compares with the wounded's actual conditions of forensic identification in true traffic accident: entire to verify
The Stability and veracity of model.
A: if the athletic posture of new standard digital dummy model at any time and pure standard multi-rigid body digital dummy model are at any time
Between athletic posture be consistent and new standard digital dummy model finite element fracture cloud atlas and pure standard finite element digital dummy model
Fracture cloud atlas is consistent, then new standard digital dummy model meets the requirements, collision parameter needed for exporting digital dummy, then will collision
Impairment parameter is compared with forensic identification result, further verifies the stability of entire collision model；
B: if new standard digital dummy model is undesirable, return step S2, the Coupling in Madymo
Assistant module resets hinge, contact and adjustment dummy position, and repeats above operation.
It is with Hybrid type III multi-rigid body digital dummy model and THUMS finite element digital dummy mould in above embodiments
Type is as basic dummy model, but design method provided by the invention is not limited to also fit using this two classes digital dummy model
The case where for being basic dummy model with other general digital dummy models.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
It, completely can be by the way that method and step be carried out programming in logic come so that provided by the invention other than system, device and its modules
System, device and its modules are declined with logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion
The form of controller etc. realizes identical program.So system provided by the invention, device and its modules may be considered that
It is a kind of hardware component, and the knot that the module for realizing various programs for including in it can also be considered as in hardware component
Structure；It can also will be considered as realizing the module of various functions either the software program of implementation method can be Hardware Subdivision again
Structure in part.
Claims (10)
1. a kind of digital dummy model modelling approach calculated based on multi-rigid body and Coupled with Finite Element, which is characterized in that including with
Lower step:
S1, it establishes standard digital dummy model library: establishing the standard multi-rigid body digital dummy for separately including each physical feeling model
Model library and standard finite element digital dummy model library；
S2, design new standard digital dummy model: LS-DYNA module is selected in the coupling software of Madymo, and in coupled mode
Hinge is defined in block and adjusts contact, passes through each position digital dummy mould of standard multi-rigid body and standard finite element of the step S1
Type generates complete new standard digital dummy model, and new standard dummy model is applied in traffic accident recombination, passes through coupling
Simulation calculation is closed to verify new standard digital dummy model；
S3, output digital dummy collision parameter: using the new standard digital dummy model and its in true traffic accident
L-G simulation test, export and verify the collision parameter of new standard digital dummy.
2. the digital dummy model modelling approach according to claim 1 calculated based on multi-rigid body and Coupled with Finite Element,
It is characterized in that, each site model of the step S1 Plays multi-rigid body digital dummy is by international HybridIII
Standard multi-rigid body digital dummy is split and is obtained.
3. the digital dummy model modelling approach according to claim 2 calculated based on multi-rigid body and Coupled with Finite Element,
Be characterized in that, each site model of standard multi-rigid body digital dummy include 05 percentile standard women multi-rigid body digital dummy,
50 percentiles standard male multi-rigid body digital dummy of medium height, 95 percentile large scale standard male's multi-rigid body digital dummies, 3
Year normal child multi-rigid body digital dummy and 6 years old normal child multi-rigid body digital dummy.
4. the digital dummy model modelling approach according to claim 1 calculated based on multi-rigid body and Coupled with Finite Element,
It is characterized in that, each site model of the step S1 Plays finite element digital dummy is by THUMS international standard finite element
Digital dummy is split and is obtained.
5. the digital dummy model modelling approach according to claim 4 calculated based on multi-rigid body and Coupled with Finite Element,
Be characterized in that, each site model of standard finite element digital dummy include 05 percentile standard women finite element digital dummy,
50 percentiles standard male finite element digital dummy of medium height, 95 percentile large scale standard male's finite element digital dummies, 3
Year normal child finite element digital dummy and 6 years old normal child finite element digital dummy.
6. the digital dummy model modelling approach according to claim 1 calculated based on multi-rigid body and Coupled with Finite Element,
Be characterized in that, the step S2 specifically includes the following steps:
A, model import: according to the human body type for actually occurring traffic accident, the finite element digital dummy that will include in LS-DYNA
The multi-rigid body digital dummy model .xml file for including in model .k file and Madymo is directed respectively into Madymo's
In Coupling Assistant module；
B, coupling setting: the Coupling Assistant module in Madymo passes through hinge, contact and adjustment dummy position
Coupling generates new standard digital dummy model, and new standard digital dummy model is arranged simultaneously and reappears in emulation in traffic accident
With the coupling of vehicle and ground；
C, coupling calculate: producing one according to the whole coupling model of the step B finite element set and multi-rigid body
.cpr file is submitted Madymo solver and LS-DYNA solver to carry out solution calculating, two solvers by .cpr file respectively
It will carry out data transmission and couple calculating according to .k file and .xml file and the .cpr file set.
7. the digital dummy model modelling approach according to claim 6 calculated based on multi-rigid body and Coupled with Finite Element,
It is characterized in that, defining hinge described in the step S2 in coupling module, the specific method is as follows with contact is adjusted: first,
Standard finite element digital dummy model and auto model position are adjusted, then imported into coupling module；
Second, standard multi-rigid body digital dummy model is imported, it is more to replace standard with standard finite element digital dummy model position
Rigid body digital dummy model lacks position；
Third adjusts the position of standard multi-rigid body digital dummy model, is arranged by hinge by standard finite element digital dummy mould
Type and standard multi-rigid body digital dummy model connect, and generate new standard digital dummy model；
4th, the contact between finite element and finite element and finite element and multi-rigid body is set, new standard digital dummy mould is stablized
The setting of type and entire model.
8. the digital dummy model modelling approach according to claim 1 calculated based on multi-rigid body and Coupled with Finite Element,
Be characterized in that, the step S3 specifically includes the following steps:
I exports collision parameter: by the way that practical application of the new standard digital dummy model in traffic accident is tested, with
Time is unit, in the form of colliding posture, curve and damage figure to the new standard digital dummy model in collision process
Collision parameter exported；
II verifies new standard digital dummy model: by the movement of the new standard digital dummy model of step I output at any time
Posture and finite element fracture cloud atlas respectively with pure standard multi-rigid body digital dummy model and pure standard finite element digital dummy mould
Type compares, and compares with the wounded's actual conditions of forensic identification in true traffic accident, to verify entire model
Stability and veracity.
9. the digital dummy model modelling approach according to claim 8 calculated based on multi-rigid body and Coupled with Finite Element,
It is characterized in that, in the step II:
If the athletic posture of new standard digital dummy model at any time and the fortune of pure standard multi-rigid body digital dummy model at any time
Dynamic posture be consistent and new standard digital dummy model finite element fracture cloud atlas and pure standard finite element digital dummy model fracture cloud
Figure is consistent, then new standard digital dummy model meets the requirements, collision parameter needed for exporting digital dummy, then collsion damage is joined
Number is compared with forensic identification result, further verifies the stability of entire collision model；
If new standard digital dummy model is undesirable, step S2, the Coupling in Madymo are returned to
Assistant module resets hinge, contact and adjustment dummy position, and repeats the operation of step S2 to step S3.
10. a kind of computer readable storage medium for being stored with computer program, which is characterized in that the computer program is located
The step of reason device realizes method described in any one of claims 1 to 9 when executing.
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