CN113221351A - CAE analysis method for surface rigidity of passenger car door - Google Patents
CAE analysis method for surface rigidity of passenger car door Download PDFInfo
- Publication number
- CN113221351A CN113221351A CN202110509029.2A CN202110509029A CN113221351A CN 113221351 A CN113221351 A CN 113221351A CN 202110509029 A CN202110509029 A CN 202110509029A CN 113221351 A CN113221351 A CN 113221351A
- Authority
- CN
- China
- Prior art keywords
- vehicle door
- door
- model
- restraining
- degrees
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention discloses a method for analyzing the surface rigidity CAE of a vehicle door, which comprises the steps of establishing a vehicle door model; establishing a test pressure head model; establishing a contact pair between the outer plate of the vehicle door and the test pressure head; setting a loading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of the outer plate of the vehicle door at a loading point, and applying a load along the normal direction of the outer plate of the vehicle door at the loading point; setting an unloading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of an outer plate of the vehicle door at a loading point, and having no loading load; submitting Abaqus to solve and calculate; and analyzing the calculation result by using post-processing software.
Description
Technical Field
The invention relates to the field of Computer Aided Engineering (CAE) technology and automobile research and development, and provides a CAE analysis method for surface rigidity of a door of a passenger car, which is mainly used for evaluating whether the surface rigidity performance of the door of the passenger car meets a development target.
Background
The automobile door is a very important automobile body part, when a consumer purchases an automobile, the performance of the automobile is evaluated by a touch pressing mode, and if the outer door plate is pressed to generate large displacement deformation, a very soft feeling is given.
In the prior art, in the development process of the automobile door, surface rigidity performance can only be verified in a real-vehicle test mode, a production mold and a manufacturing sample piece are required to be designed for the real-vehicle test, if the test is unqualified, the design scheme needs to be repeatedly modified, the mold needs to be adjusted, and even the mold is scrapped, so that a large amount of time cost and development cost are required.
CN111723508A discloses an engine timing cover light weight CAE analysis method, including the step: s1, establishing a finite element model of the initial scheme of the timing cover; s2, performing modal analysis calculation and frequency response analysis calculation on the finite element model of the normal time cover initial scheme; s3, carrying out vibration response optimization on the finite element model of the normal time cover initial scheme; s4, establishing a topological structure of the timing cover; s5, establishing a 1D shell unit model of the timing cover and carrying out appearance optimization; s6, obtaining a timing cover optimization scheme based on the cloud picture of the vibration response optimization and the appearance optimization results; and S7, establishing a timing cover optimization model according to the timing cover optimization scheme, and performing modal and frequency response analysis and local optimization check. The CAE analysis method for the light weight of the engine timing cover can help designers to obtain a design scheme of the light weight of the timing cover structure on the premise of considering performance, and the product development speed is accelerated.
CN108846231A relates to a method for CAE analysis of torsion rigidity of an automobile back upward opening door, which is to establish a three-dimensional model of the back upward opening door and introduce the three-dimensional model into CAE software to carry out several cleaning and grid division; applying boundaries, constraints and loads to the three-dimensional model; giving the position of the measuring point, solving the corresponding displacement, and calculating the torsional rigidity according to the displacement; and comparing the calculated torsional rigidity with a target value, and judging whether the torsional rigidity is qualified or not. The method can efficiently obtain the torsional rigidity of the upward opening door of the back of the automobile at low cost, avoids the optimization of material objects, and reduces the time cost and the expense cost for optimizing and repairing the mold and even scrapping the mold.
CN2638052 relates to a sensor for measuring surface stiffness of a covering element, which is composed of two parts, namely a load cell and a displacement cell. The force measuring element consists of a force measuring ring adhered with a resistance strain gauge, a sleeve connected with the lower end of the force measuring ring and a force measuring pressure head movably connected with the sleeve; the displacement measuring element is composed of a dial indicator and a platen. The sensor for measuring the rigidity of the surface of the covering part can simultaneously measure a force value borne by the surface of the covering part and a displacement of the deformation of the surface of the covering part under the force value, so that the rigidity value of the surface of the covering part is obtained; the method is convenient to operate, can be used for measuring the surface rigidity of the automobile body covering part, can also meet the measurement of the surface rigidity of various covering parts, and can finish the measurement only by correcting the sensitivity of the force sensor no matter whether the object is made of metal or non-metal materials.
Disclosure of Invention
In order to solve the problems of long development period and high cost of the traditional automobile door, the invention aims to provide a CAE analysis method for the surface rigidity of the automobile door.
The purpose of the invention is realized by the following technical scheme:
a method for CAE analysis of surface stiffness of a vehicle door, comprising the steps of:
step 1: establishing a vehicle door model;
step 2: establishing a test pressure head model; and step 3: establishing a contact pair between the outer plate of the vehicle door and the test pressure head; and 4, step 4: setting a loading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of the outer plate of the vehicle door at a loading point, and applying a load along the normal direction of the outer plate of the vehicle door at the loading point;
and 5: setting an unloading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of an outer plate of the vehicle door at a loading point, and having no loading load;
step 6: submitting Abaqus to solve and calculate;
and 7: and (4) analyzing the calculation result of the step (6) by using post-processing software, and checking the maximum displacement, the residual displacement, the maximum plastic strain and the instability interval of the model to evaluate whether the surface rigidity of the car door meets the design requirement.
Preferably, in the step 1, the 2D unit is used for simulating the vehicle door model metal plate, the wrapping position is simulated by adopting 1 layer of 2D unit, the wrapping and the metal plate are connected in a joint mode, gluing and welding point connection are established according to an actual design scheme, material attributes are given according to actual parameters, and the wrapping position is given with attributes according to the total thickness.
Preferably, in the step 2, the test indenter model door outer panel is a main surface, and the test indenter is a slave surface.
Preferably, in the step 2, the friction coefficient of the test indenter model is set to be 0.1, and an Adjust parameter is set in the contact pair.
Preferably, the steps 1 to 5 are implemented by Hypermesh software.
Preferably, the step 7 is implemented by Hyperview software or Abaqus software.
The invention has the following beneficial effects:
according to the method, the rigidity performance of the surface of the vehicle door can be accurately analyzed through a simulation means, the weak position is optimized and improved in a targeted manner until the design requirement is met, the rigidity performance target of the surface of the vehicle door can be achieved in the design stage, the development period is shortened, and the development cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of edge wrapping modeling of a vehicle door model;
FIG. 2 is a schematic diagram of a CAE analysis model of the surface rigidity of the vehicle door established by the invention;
in the figure:
1-a door outer panel; 2-test indenter; 3-a door hinge; 4-door lock; 5-vehicle door anti-collision beam; 6-inner door panel; 7-edge wrapping.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
A method for CAE analysis of surface stiffness of a vehicle door, comprising the steps of:
step 1: establishing a vehicle door model;
step 2: establishing a test pressure head model; and step 3: establishing a contact pair between the outer plate of the vehicle door and the test pressure head; and 4, step 4: setting a loading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of the outer plate of the vehicle door at a loading point, and applying a load along the normal direction of the outer plate of the vehicle door at the loading point;
and 5: setting an unloading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of an outer plate of the vehicle door at a loading point, and having no loading load;
step 6: submitting Abaqus to solve and calculate;
and 7: and (4) analyzing the calculation result of the step (6) by using post-processing software, and checking the maximum displacement, the residual displacement, the maximum plastic strain and the instability interval of the model to evaluate whether the surface rigidity of the car door meets the design requirement.
Preferably, in the step 1, the 2D unit is used for simulating the vehicle door model metal plate, the wrapping position is simulated by adopting 1 layer of 2D unit, the wrapping and the metal plate are connected in a joint mode, gluing and welding point connection are established according to an actual design scheme, material attributes are given according to actual parameters, and the wrapping position is given with attributes according to the total thickness.
Preferably, in the step 2, the test indenter model door outer panel is a main surface, and the test indenter is a slave surface.
Preferably, in the step 2, the friction coefficient of the test indenter model is set to be 0.1, and an Adjust parameter is set in the contact pair.
Preferably, the steps 1 to 5 are implemented by Hypermesh software.
Preferably, the step 7 is implemented by Hyperview software or Abaqus software.
Examples
A method for CAE analysis of surface stiffness of a vehicle door, comprising the steps of:
step 1: establishing a car door model, simulating a metal plate by using 2D units, simulating a wrapping position by using 1 layer of 2D units, and connecting the wrapping and the metal plate in a common node manner, wherein as shown in figure 1, adhesive and welding point connection is established according to an actual design scheme; giving material attributes according to actual parameters, and giving attributes to the edge covering position according to the total thickness;
step 2: establishing a test pressure head model, simulating a rubber part by using a 3D unit, simulating a metal base by using a 2D unit, connecting the metal base and the rubber through a common node, and endowing material properties according to actual parameters;
and step 3: establishing a contact pair between the outer plate of the vehicle door and a test pressure head, wherein the outer plate of the vehicle door is a main surface, and the test pressure head is a slave surface; the friction coefficient is set to be 0.1, and in order to improve the convergence of the model, an Adjust parameter is set in the contact pair;
and 4, step 4: setting a loading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of the outer plate of the vehicle door at a loading point, and applying a load along the normal direction of the outer plate of the vehicle door at the loading point;
and 5: setting an unloading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of an outer plate of the vehicle door at a loading point, and having no loading load;
wherein, the steps 1-5 can be realized by means of pretreatment software such as Hypermesh software and the like;
step 6: submitting Abaqus to solve and calculate;
and 7: opening an analysis result file by using post-processing software, checking the maximum displacement, the residual displacement, the maximum plastic strain and the instability interval of the model, evaluating whether the surface rigidity of the vehicle door meets the design requirement, and establishing an improvement scheme according to the analysis result cloud chart;
And 8: repeating the steps 1-7.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for CAE analysis of surface stiffness of a vehicle door, comprising the steps of:
step 1: establishing a vehicle door model;
step 2: establishing a test pressure head model; and step 3: establishing a contact pair between the outer plate of the vehicle door and the test pressure head; and 4, step 4: setting a loading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of the outer plate of the vehicle door at a loading point, and applying a load along the normal direction of the outer plate of the vehicle door at the loading point;
and 5: setting an unloading analysis step, using an implicit analysis method, restraining all degrees of freedom at the positions of a door lock and a door hinge of the vehicle door, restraining other degrees of freedom except the normal direction of an outer plate of the vehicle door at a loading point, and having no loading load;
step 6: submitting Abaqus to solve and calculate;
and 7: and (4) analyzing the calculation result of the step (6) by using post-processing software, and checking the maximum displacement, the residual displacement, the maximum plastic strain and the instability interval of the model to evaluate whether the surface rigidity of the car door meets the design requirement.
2. The method for analyzing the surface rigidity CAE of the vehicle door according to claim 1, wherein in the step 1, a vehicle door model sheet metal is simulated by using 2D units, the wrapping position is simulated by using 1 layer of 2D units, the wrapping edge and the sheet metal are connected in a common node mode, gluing and welding point connection is established according to an actual design scheme, material attributes are given according to actual parameters, and attributes are given according to the total thickness of the wrapping edge.
3. The method for CAE analysis of the surface rigidity of the vehicle door as claimed in claim 1, wherein in the step 2, the test indenter model outer door panel is a main surface, and the test indenter is a slave surface.
4. The method for CAE analysis of the surface rigidity of the vehicle door as claimed in claim 2, wherein in the step 2, the friction coefficient of the test indenter model is set to 0.1, and the Adjust parameter is set in the contact pair.
5. The method for analyzing the CAE of the surface rigidity of the vehicle door as claimed in claim 1, wherein the steps 1 to 5 are realized by Hypermesh software.
6. The method for analyzing the CAE of the surface rigidity of the vehicle door as claimed in claim 1, wherein the step 7 is realized by Hyperview software or Abaqus software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509029.2A CN113221351A (en) | 2021-05-11 | 2021-05-11 | CAE analysis method for surface rigidity of passenger car door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509029.2A CN113221351A (en) | 2021-05-11 | 2021-05-11 | CAE analysis method for surface rigidity of passenger car door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113221351A true CN113221351A (en) | 2021-08-06 |
Family
ID=77094477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110509029.2A Pending CN113221351A (en) | 2021-05-11 | 2021-05-11 | CAE analysis method for surface rigidity of passenger car door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113221351A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115130208A (en) * | 2022-06-21 | 2022-09-30 | 东风汽车集团股份有限公司 | Connecting assembly and rigidity checking method and device of connecting assembly |
| CN116910924A (en) * | 2023-09-13 | 2023-10-20 | 天津龙创世纪汽车设计有限公司 | Quick analysis method based on strength of car door trim card seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104866635A (en) * | 2014-02-21 | 2015-08-26 | 广州汽车集团股份有限公司 | Dent resistance simulation analysis pressure head modeling method for car body outer cover part outer plate |
| CN109885963A (en) * | 2019-03-07 | 2019-06-14 | 天津龙创世纪汽车设计有限公司 | A kind of method that the simulation of vehicle head-on crash is suspended and its failed |
| CN111380701A (en) * | 2020-04-23 | 2020-07-07 | 东风汽车集团有限公司 | Vehicle door unlocking performance flexible test bench and vehicle door unlocking performance measuring method |
-
2021
- 2021-05-11 CN CN202110509029.2A patent/CN113221351A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104866635A (en) * | 2014-02-21 | 2015-08-26 | 广州汽车集团股份有限公司 | Dent resistance simulation analysis pressure head modeling method for car body outer cover part outer plate |
| CN109885963A (en) * | 2019-03-07 | 2019-06-14 | 天津龙创世纪汽车设计有限公司 | A kind of method that the simulation of vehicle head-on crash is suspended and its failed |
| CN111380701A (en) * | 2020-04-23 | 2020-07-07 | 东风汽车集团有限公司 | Vehicle door unlocking performance flexible test bench and vehicle door unlocking performance measuring method |
Non-Patent Citations (1)
| Title |
|---|
| 韦永平 等: "某乘用车车门抗凹陷性能分析及优化", 《重庆理工大学学报(自然科学)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115130208A (en) * | 2022-06-21 | 2022-09-30 | 东风汽车集团股份有限公司 | Connecting assembly and rigidity checking method and device of connecting assembly |
| CN116910924A (en) * | 2023-09-13 | 2023-10-20 | 天津龙创世纪汽车设计有限公司 | Quick analysis method based on strength of car door trim card seat |
| CN116910924B (en) * | 2023-09-13 | 2024-01-19 | 天津龙创世纪汽车设计有限公司 | Quick analysis method based on strength of car door trim card seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Donders et al. | A reduced beam and joint concept modeling approach to optimize global vehicle body dynamics | |
| CN113221351A (en) | CAE analysis method for surface rigidity of passenger car door | |
| US7158922B2 (en) | System and method for prediction of panel performance under localized loading conditions | |
| WO2019011026A1 (en) | Composite material structure finite element model correction method based on cluster analysis | |
| US8401827B2 (en) | Processing device and method for structure data representing a physical structure | |
| Wei et al. | A finite element model for the rolling loss prediction and fracture analysis of radial tires | |
| CN105740504B (en) | A kind of modeling method, calculation method and the device of passenger car gas cylinder installation strength | |
| CN102867075A (en) | Acceleration frequency response analysis-based body floor optimal design method | |
| Hou et al. | Multi-objective and multi-constraint design optimization for hat-shaped composite T-joints in automobiles | |
| CN107315850A (en) | A kind of body structure topology design method | |
| CN111125946A (en) | Method for optimizing structure of boarding body based on MDO technology | |
| CN106446451A (en) | Anti-concavity property analysis method and device based on finite element method | |
| CN108875188B (en) | Method and device for optimizing a body joint of a motor vehicle | |
| Hongzhi et al. | Investigation of sheet metal forming by numerical simulation and experiment | |
| CN104133925B (en) | A kind of nonlinear analysis method suitable for canopy structural static strength | |
| CN111241627B (en) | Heterogeneous vehicle body door cover member modal numerical simulation and optimization method with glue layer | |
| Van der Auweraer et al. | A new testing paradigm for today's product development process-Part 1 | |
| CN113177268A (en) | Method and device for predicting assembly clearance of vehicle back door | |
| CN112507595A (en) | Prediction method for creep property of rubber vibration isolator | |
| Wang et al. | Finite element modeling of electric vehicle power battery pack and its influence analysis and test research at body-in-white stage | |
| CN112163353B (en) | Modeling method and strength analysis method for vehicle door inward opening handle assembly | |
| Huang et al. | Sensitivity Study of Self-Piercing Rivet Insertion Process Using Smoothed Particle Galerkin Method | |
| KR20240042056A (en) | Behavior analysis method of panel parts, method for predicting appearance defects of automotive panel parts, behavior analysis device, and behavior analysis program | |
| Yuan et al. | Numerical simulation of aluminum alloy wheel 13° impact test based on Abaqus | |
| Biradar et al. | Fiber Reinforced Plastic Durability: Nonlinear Multi-Scale Modeling for Structural Part Life Predictions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210806 |