EP3973433A1 - Verfahren und vorrichtung zur vorhersage und/oder reduzierung der verformung einer mehrteiligen baugruppe - Google Patents
Verfahren und vorrichtung zur vorhersage und/oder reduzierung der verformung einer mehrteiligen baugruppeInfo
- Publication number
- EP3973433A1 EP3973433A1 EP20718640.4A EP20718640A EP3973433A1 EP 3973433 A1 EP3973433 A1 EP 3973433A1 EP 20718640 A EP20718640 A EP 20718640A EP 3973433 A1 EP3973433 A1 EP 3973433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- fes
- weld seam
- contraction
- model
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to controlling of welding distortion
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Definitions
- the invention relates to a method and a corresponding device that make it possible to predict and / or reduce the geometric distortion of an assembly that consists of several construction parts that are connected to one another via one or more welds.
- a vehicle typically has different multi-part assemblies in which at least two components are connected to one another via one or more linear weld seams.
- a relatively stable structural component for a vehicle can be produced using one or more
- Welds are connected to a relatively easily deformable outer skin component, the outer skin component forming the outer shape of the vehicle door.
- a geometric distortion can be caused, which leads to visible deformations on the outer skin component.
- Deformations that arise when creating weld seams are typically only recognized at a relatively late stage in the development of an assembly and / or can only be predicted for the assembly using relatively complex thermomechanically coupled models.
- the present document is concerned with the technical task of being able to recognize and / or avoid or reduce deformations that are caused when a multi-part assembly is welded together at an early stage and / or in an efficient manner.
- the problem is solved by the independent claims.
- Advantageous embodiments are described, inter alia, in the dependent claims. It is pointed out that additional features of a patent claim dependent on an independent patent claim without the features of the independent patent claim or only in combination with a subset of the features of the independent patent claim can form a separate invention independent of the combination of all features of the independent patent claim which can be made the subject of an independent claim, a divisional application or a subsequent application. This applies equally to the technical teachings described in the description, which can form an invention that is independent of the features of the independent patent claims.
- an apparatus e.g., a computer and / or a server
- the device is designed to predict and / or reduce the deformation of the assembly that is brought about when at least one weld seam is produced to connect a first component and a second component of the assembly.
- the device can be designed to predict and / or reduce the deformation of a multi-part assembly caused during a welding process (in particular a laser welding process and / or a tactile and / or remote welding process).
- the aspects described in this document can generally be applied to welding processes in which a linear and / or elongated weld seam is herge between two components.
- the device described in this document can be part of a CAD (Computer Aided Design) system.
- the first component can have a relatively high rigidity and the second component can have a relatively low rigidity. In other words, the second component can be deformed relatively easily in comparison to the first component his.
- the second component can for example consist of a relatively thin sheet metal (for example with a thickness or strength of 0.5 cm or less).
- the assembly is a door or flap (particularly a door or flap of a vehicle).
- the first component can form a load-bearing structure of the door or flap and the second component can form an outer skin of the door or flap.
- the device is set up to determine and / or provide a finite element (FE) model of the assembly.
- the FE model includes a set of FEs for the weld seam and a set of FEs for the first and second component.
- the weld seam can extend linearly between the first component and the second component (e.g. along an edge of the first component and along an edge of the second component).
- the weld seam can have a length that is significantly (in particular by a factor of 5 or more, 10 or more or 50 or more) greater than the thickness and / or the width of the weld seam.
- the FE model can describe the full and / or the entire weld seam right at the start of a simulation.
- the set of FEs for the (entire) weld seam can then comprise a line-shaped series of FEs corresponding to the weld seam.
- An FE model can thus be provided for the assembly which (already at the beginning of the simulation) has a set of FEs for the entire weld seam between the first component and the second component.
- the individual FEs of the FE model typically each have a certain spatial extent (eg as a three-dimensional cuboid or bar).
- an FE typically includes a mechanical (mathematical) model that describes how a force applied to an edge of the FE affects the spatial expansion of the FE.
- Adjacent FEs are typically mechanically coupled to one another, so that a change in the spatial expansion of an FE causes a force on a directly adjacent FE, which in turn can cause a change in the spatial expansion of the directly adjacent FE.
- An FE model can be provided in a basic state in which the first component and the second component have the shape that the first component and the second component had before the welding process, ie before the production of the
- the FE model already includes the entire weld seam between the first component and the second component.
- the FE model for the (entire) weld seam can then have FEs that connect the FEs of the (undeformed) first component with the FEs of the (undeformed) second component.
- no forces are brought about by an FE for the weld seam on an FE of the first and / or the second component. This preferably applies to all FEs of the weld seam.
- the device can be set up to cause a spatial contraction of the set of FEs for the weld seam.
- the spatial extent of the FEs for the weld seam in particular along the start of the weld seam
- a spatial contraction can be brought about by a specific contraction factor (in order to ensure that the weld seam, starting from the basic state, has a catch that is reduced by the contraction factor).
- the contraction factor can be applied to the individual FEs of the set of FEs for the weld.
- the spatial contraction can be evenly distributed over the set of FEs for the weld seam.
- the device is also set up to determine and / or simulate the effect of the spatial contraction of the amount of FEs for the weld seam on the amount of FEs for the first and / or the second component.
- the contraction can be brought about gradually (for example on a sequence of time steps) in order to gradually determine and / or simulate the progressive effects (for example on the sequence of time steps).
- the spatial contraction of the FEs for the weld seam typically brings about forces on individual FEs of the first component and / or the second component. These forces in turn lead to a change in the spatial extent of the individual FEs of the first component and / or of the second component. These changes and / or effects on the individual FEs can be determined in the context of an FE simulation.
- the device is set up to predict the spatial deformation of the first component and / or the second component on the basis of the effect on the set of FEs for the first and / or the second component.
- one or more points can be predicted at which the first and / or the second component will deform as a result of the production of the at least one weld seam.
- the device enables the effects of the production of a weld seam to be predicted in an efficient manner (without using a thermomechanical model and / or without taking into account parameters with respect to the welding process and / or with respect to the welding tool) and, based on this, reduce them .
- the cost of a multi-part assembly can thus be reduced and the quality of the assembly produced can be increased.
- the device described does not carry out a progressive build-up of the weld seam in order to simulate the production of the weld seam analogously to reality.
- the device uses an FE model of the assembly that already includes a set of FEs for the entire weld seam.
- the amount of FEs for the weld seam can already be used at the beginning of an FE simulation to determine the effect of the spatial contraction on the amount of FEs for the first and / or the second component, the entire weld seam between the first component and the second component describe (as they actually do should be produced). In this way, the complexity of the simulation can be significantly reduced.
- the described device typically does not use any data relating to a welding system and / or tool and / or relating to the kinematics of the welding system and / or the welding tool that relate to the real assembly process of the assembly influence. Instead, the effects of the welding process are simulated in an efficient manner (possibly alone) by contraction of the FE model of the entire weld seam between the first component and the second component.
- the device can be set up to determine one or more (reference) properties of the first component and / or of the second component.
- Exemplary (reference) properties are: the material of the first component and / or of the second component, and / or the material thickness of the first component and / or of the second component.
- the extent of the contraction to be induced in particular the contraction factor for the contraction of the weld seam, can then be determined in a precise manner based on the one or more reference properties of the first component and / or of the second component.
- the extent of the contraction to be caused can be determined on the basis of predetermined characteristic data, the characteristic data for a plurality of combinations of different one or more reference properties of a first reference component and / or a second reference component each being an extent of the con to be initiated show traction.
- the characteristic data can, for example, have been determined in advance using (thermomechanical) simulations and / or on the basis of measurements on actual assemblies.
- the deformation of the assembly can be predicted in a particularly precise manner and / or be reduced.
- the device can be set up to iteratively and / or repeatedly adapt the first and / or the second component (in particular the FE model of the first and / or the second component) (in particular with regard to the shape and / or the used Material).
- the deformation can then be repeatedly predicted.
- first component and / or the second component can be adapted iteratively and / or repeatedly in order to produce an assembly with a reduced amount of deformation.
- the device can be set up to repeatedly adapt the FE model of the assembly for the first component and / or for the second component, in order to determine an adapted FE model in each case.
- the device can be set up to adapt the geometric shape and / or a material property (e.g. the material thickness) of the first component and / or the second component in order to determine the adapted FE model.
- a spatial contraction of the set of FEs for the weld seam of the respectively adapted FE model can then be initiated, and the effect of the spatial contraction on the set of FEs for the first and / or the second component of the adapted FE model can be initiated be determined. Furthermore, the extent of the spatial deformation of the first component and / or of the second component can be determined based on the effect on the set of FEs for the first and / or the second component of the respectively adapted FE model.
- the repeated adaptation of the FE model can be used to determine an optimized, adapted FE model for which the extent of the spatial deformation of the first component and / or of the second component is smaller than a predetermined deformation threshold value.
- the device can be set up to provide design data for the optimized, adapted FE model of the assembly, the design data making it possible to manufacture the first component and / or the second component.
- the optimized, adapted FE model can be used to manufacture the first component and / or the second component. In this way, it can be ensured in a reliable manner that the assembly produced by welding the first and second component has a reduced amount of deformation.
- a (computer-implemented) method for predicting and / or reducing the deformation of an assembly is described, which is brought about when producing at least one weld seam to connect a first component and a second component of the assembly.
- the deformation of the (relatively easily deformable) second construction can be partially predicted and / or reduced.
- SW software program
- the software program can be set up to be executed on a processor (e.g. on a computer or server) and thereby to execute the method described in this document.
- FIG. 1 shows an exemplary vehicle with a multi-part assembly
- FIG. 2a shows a multi-part assembly in a front view
- FIG. 2b shows a multi-part assembly in a side view
- FIG. 3a shows an exemplary finite element model of a multi-part assembly
- FIG. 3b shows an exemplary finite element
- FIG. 1 shows a vehicle 100 with a vehicle door 110 as an example of a multi-part assembly.
- FIG. 2a schematically shows a multi-part assembly 110 in a front view (on the surface of the multi-part assembly 110) and FIG. 2b in a side view (on the edge between the different components 201, 202 of the assembly 110).
- the multi-part assembly 110 can have an area of 0.5 m 2 or more, for example.
- connection of the two components 201, 202 by one or more linear and / or elongated weld seams 203 can lead to tension within the construction group 110, the tension particularly in the second construction part 202 causing deformations.
- the stresses can in particular be caused by the thermal influences during the production and cooling of the weld seams 203.
- the stresses and deformations caused thereby can, if necessary, be predicted by specific measurements on prototypes of the component 110 and / or by using complex thermomechanical simulation models.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Automatic Assembly (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019113805.1A DE102019113805B4 (de) | 2019-05-23 | 2019-05-23 | Verfahren und Vorrichtung zur Vorhersage und/oder Reduzierung der Verformung einer mehrteiligen Baugruppe |
| PCT/EP2020/060126 WO2020233900A1 (de) | 2019-05-23 | 2020-04-09 | Verfahren und vorrichtung zur vorhersage und/oder reduzierung der verformung einer mehrteiligen baugruppe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3973433A1 true EP3973433A1 (de) | 2022-03-30 |
Family
ID=70285679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20718640.4A Pending EP3973433A1 (de) | 2019-05-23 | 2020-04-09 | Verfahren und vorrichtung zur vorhersage und/oder reduzierung der verformung einer mehrteiligen baugruppe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220318461A1 (de) |
| EP (1) | EP3973433A1 (de) |
| CN (1) | CN113543929A (de) |
| DE (1) | DE102019113805B4 (de) |
| WO (1) | WO2020233900A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022117449A1 (de) * | 2022-07-13 | 2024-01-18 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zur Ermittlung der geometrischen Robustheit einer mehrteiligen Baugruppe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6398102B1 (en) * | 1999-10-05 | 2002-06-04 | Caterpillar Inc. | Method for providing an analytical solution for a thermal history of a welding process |
| US7734450B2 (en) * | 2004-03-29 | 2010-06-08 | Osaka Industrial Promotion Organization | Welding deformation computing method, welding deformation computing device, and computer program product |
| US20090083016A1 (en) * | 2004-11-17 | 2009-03-26 | Tecosim Technische Simulation Gmbh | Method for Generating a Calculation Model for a Mechanical Structure |
| KR101086761B1 (ko) * | 2009-06-10 | 2011-11-24 | 삼성중공업 주식회사 | 저변형 용접 순서 도출을 위한 해석방법 |
| US8996342B1 (en) * | 2011-12-28 | 2015-03-31 | MCS.Software Corporation | Automatic variable fidelity simulation |
| CN104008219B (zh) * | 2013-02-26 | 2017-06-23 | 上海通用汽车有限公司 | 一种焊接变形分析预测方法 |
| CN104809291A (zh) * | 2015-04-27 | 2015-07-29 | 江苏金通灵流体机械科技股份有限公司 | 一种基于ansys的双相不锈钢与异种钢焊接变形预测方法 |
| US20160354854A1 (en) * | 2015-06-02 | 2016-12-08 | Caterpillar Inc. | Systems and Methods for Weld Distortion Reduction via a Dynamically Controlled Heat Source |
| CN107871029B (zh) * | 2016-09-26 | 2021-05-18 | 首都航天机械公司 | 预测时效强化铝合金tig焊接头断裂过程的有限元模拟方法 |
-
2019
- 2019-05-23 DE DE102019113805.1A patent/DE102019113805B4/de not_active Revoked
-
2020
- 2020-04-09 CN CN202080019535.7A patent/CN113543929A/zh active Pending
- 2020-04-09 EP EP20718640.4A patent/EP3973433A1/de active Pending
- 2020-04-09 WO PCT/EP2020/060126 patent/WO2020233900A1/de not_active Ceased
- 2020-04-09 US US17/613,389 patent/US20220318461A1/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| STAPELFELD CHRISTOPH: "Ausz�ge aus VEREINFACHTE MODELLE ZUR SCHWEISSVERZUGSBERECHNUNG", BERICHTE DES LEHRSTUHLS F�GE- UND SCHWEI�TECHNIK DER BTU COTTBUS-SENFTENBERG, 31 January 2016 (2016-01-31), pages 1 - 48, XP093297068, ISBN: 978-3-8440-4142-2, Retrieved from the Internet <URL:http://www.shaker.de/shop/978-3-8440-4142-2> * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220318461A1 (en) | 2022-10-06 |
| DE102019113805A1 (de) | 2020-11-26 |
| CN113543929A (zh) | 2021-10-22 |
| WO2020233900A1 (de) | 2020-11-26 |
| DE102019113805B4 (de) | 2021-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3405891B1 (de) | Kompensation der rückfederung bei der herstellung von blechumformteilen | |
| DE69032387T2 (de) | Vorrichtung und Verfahren zum rechnergestützten Entwurf von Blechteilen | |
| EP3770792A1 (de) | Verfahren und vorrichtung zur modellerstellung und festigkeitsbewertung von schweissnähten zwischen mechanischen bauteilen | |
| DE102007039337B3 (de) | Verfahren zur Bestimmung des Formänderungsvermögens eines Körpers | |
| DE102011003314A1 (de) | Verfahren zur Herstellung eines Bauteils | |
| EP1665103A1 (de) | Bestimmung eines modells einer geometrie einer blech-umformstufe | |
| EP3267338A1 (de) | Verfahren zur berechnung von kerbspannungen in einer schweissnaht | |
| EP3650134B1 (de) | Richtprozess | |
| EP1830235A2 (de) | Auslegung von Werkzeugen und Prozessen für die Umformtechnik | |
| DE69802047T2 (de) | Verfahren zum Herstellen einer Matrize für eine Biegepresse und zum Bestimmen der Niederhalterkräfte | |
| EP3267339A1 (de) | Verfahren zur erstellung eines meta-modells zur berechnung von kerbspannungen | |
| EP3973433A1 (de) | Verfahren und vorrichtung zur vorhersage und/oder reduzierung der verformung einer mehrteiligen baugruppe | |
| DE102022115385A1 (de) | Beurteilen der Stabilität eines Bauteils | |
| DE102022117449A1 (de) | Verfahren und Vorrichtung zur Ermittlung der geometrischen Robustheit einer mehrteiligen Baugruppe | |
| DE102013013625B4 (de) | Verfahren zur Konstruktion einer in der Automobilindustrie eingesetzten Karosseriebauvorrichtung | |
| DE102004025090A1 (de) | Bewertungsverfahren und Bewertungsvorrichtung für Punktschweißabschnitt | |
| DE102023111362A1 (de) | Verfahren und Vorrichtung zur Kompensation des Geometrieverzugs bei Herstellung einer Schweißnaht | |
| DE102005011115A1 (de) | Verfahren zum Tragen einer Drahtgestaltung, eine Drahtvorrichtung, welche das Verfahren verwendet, und ein computerlesbares Aufzeichnungsmedium | |
| DE102023200802A1 (de) | Verfahren zur verbesserten Herstellung von Bauteilen | |
| EP2137649B1 (de) | Automatisches erzeugen einer vernetzung eines komponentenmodells | |
| DE102021127136A1 (de) | Verfahren zum herstellen einer fahrzeugplatte, um die abweichung zwischen vorplatten und nachfolgenden sekundären formungsmatrizen zu reduzieren | |
| DE102007045705A1 (de) | Verfahren zur Durchführung eines Fügeprozesses in einer Fügevorrichtung | |
| EP4062243A1 (de) | Verfahren zum erstellen eines virtuellen dreidimensionalen struktur-modells | |
| DE202019006018U1 (de) | Vorrichtung zur Modellerstellung und Festigkeitsbewertung von Schweißnähten zwischen mechanischen Bauteilen | |
| DE102005044197A1 (de) | Verfahren zur rückfederungskompensierten Herstellung von Blechformteilen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20211124 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230502 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20250725 |