The invention relates to a method for transferring a stress state of an FE simulation result to a new FE mesh geometry of a simulated construction system, such as a component for motor vehicles that has a 3-D shape, in a simulation chain of production operations, comprising: a) providing a first data set, which describes the FE simulation result with a stress state of the FE simulation of the construction system or component of a first production operation, b) creating the new FE mesh geometry of the simulated construction system or component, which new FE mesh geometry is associated with a second production operation, c) transferring the stress state of the provided first data set to the new FE mesh geometry of the construction system or component, d) performing an equilibrium calculation by using the stress tensor in the FE mesh geometry, wherein deformation of the construction system or component results, which deformation differs from the deformation in the FE mesh by a shape alteration u>tolerance value ε, e) iteratively repeating the equilibrium calculation as a cyclic equilibrium iteration in the new FE mesh geometry (in the new target FE mesh) of the construction system or component, wherein, in each cycle, a new stress state is applied to the FE mesh geometry of the construction system or component and stress components that lead to undesired shape alterations are decreased until a displacement/termination criterion of shape alteration u<tolerance value ε is achieved, and f) displaying the fulfilled condition of u<ε.

A computer implemented method for designing a web (4) linking parts (3) to a carrier (2) in a sheet metal strip (1) that is processed in a progressive die process, comprises the steps of processing input actions from a user, the input actions specifying parameters of web primitive elements, the web primitive elements comprising at least connections (5), each connection (5) representing a link between sheet metal sections; the user input actions specifying, for each connection (5), a first connection point (13), at which the connection (5) is joined to a first sheet metal section, and a second connection point (13), at which the connection (5) is joined to a second sheet metal section;
the method allowing for a user input of a deformability parameter associated with a connection (5), for modifying a spring constant of the connection (5) in a direction between the first and second connection points (13).

A method of modifying a CAD system model performed on a data processing system includes receiving a dataset of co-ordinates representing an article in 2d, or in 3d and receiving 2d or 3d constraints respectively, to be applied to any changes to the dataset of co-ordinates for the article. A modification to be applied to the dataset is received and combined with the relevant 2d and 3d constraints to produce a constrained modification for each of the article and associated article. The constrained modification is solved in 2d and in 3d to determine whether a solution exists in which all constraints are met. If the solve is successful, the constrained modification is applied to each dataset simultaneously and, updated datasets are stored. If the solve fails, the constraints may be reduced and the solve step repeated, or the process is terminated.

A computer-implemented method and device are directed to a geometric analysis of a result of a manufacturing process or of a simulation of a manufacturing process in which a part (14) is formed from a planar sheet of material by means of a tool (1). The result comprises result model, being a computer based representation of the part after the (real or simulated) manufacturing process. The method comprises the computer-implemented steps of retrieving the result model (2); retrieving a reference model (3), the reference model being a mesh based model derived from a CAD model representing a target shape of the part or a tool shape; determining an improved result model (33) by transforming the mesh of the reference model (3) to match the shape of the result model (2); performing a geometric analysis on the basis of the improved result model (33).

A forming method of a deep cavity thin-walled metal component with extremely small fillet radius is provided. In the forming method of a deep cavity thin-walled metal component with extremely small fillet radius, a global cavity is formed by deep drawing by means of a rigid die, an extremely small fillet is formed by means of aextrusion/pushing die, so that the deep drawing process is independent of the extremely small fillet forming process, and the problems of wrinkling, cracking and the like in the process of forming the two simultaneously are avoided. Thus, the problem that the extremely small fillet is difficult or impossible to form can be solved.

A method of modifying a CAD system model performed on a data processing system includes receiving a dataset of co-ordinates representing an article in 2d, or in 3d and receiving 2d or 3d constraints respectively, to be applied to any changes to the dataset of co-ordinates for the article. A modification to be applied to the dataset is received and combined with the relevant 2d and 3d constraints to produce a constrained modification for each of the article and associated article. The constrained modification is solved in 2d and in 3d to determine whether a solution exists in which all constraints are met. If the solve is successful, the constrained modification is applied to each dataset simultaneously and, updated datasets are stored. If the solve fails, the constraints may be reduced and the solve step repeated, or the process is terminated.

A method for automatic panel design and fabrication includes receiving a two-dimensional or three-dimensional architectural plan for a building, converting the architectural plan into a first data file that contains information about a location, length, and style of each wall included in the architectural plan, obtaining, from the first data file, a list of walls to automatically generate a second data file that contains a list of panels to be constructed for each of the list of walls, and generating a set of commands for each of panels in the list and transmitting the set of commands to a robotic builder, to allow the robotic builder to automatically build each of the panels in the list.

A computer-implemented method for analysing a result of a simulation of a manufacturing or deformation process, comprises retrieving the result of the simulation, comprising at least the geometry of the part (2) and stress tensors (23) in the part (2) caused by the forming process; for one or more starting points (32) in a critical region (22), determining a cause line (3) by following the stress or a corresponding force in the direction in which it is maximal; for each cause line (3), determining at least one line section (31) of the cause line (3), and a cause trajectory (5) representing values of a stress or a force directed along the cause line (3); and performing at least one of presenting information representing the line section (31) and the cause trajectory (5) along the line section (31) to a user; and automatically adapting, parameters of the forming process.