Dassault Systemes

Arnaud Deslandes

Jean-Francois Rameau

David Leo Bonner

Jean-François Rameau

Karim Yousfi

Damien Tessier

David L Bonner

Described herein is a computer-implemented method for orienting 3D printing of a real object. The method comprises obtaining a 3D modeled object that represents the real object. The method also comprises determining one or more orientations of the 3D modeled object for which an overhang volume is optimal. This improves 3D printing.

Orientation of a real object for 3D printing

The invention notably relates to a computer-implemented method for designing a mechanical part, the method comprising: providing a subset of a finite element mesh (FEM), the subset of the FEM representing the mechanical part; and determining a representation of a skeleton of the mechanical part based on the subset of the FEM, the skeleton having branches and branch junctions, each branch junction joining respective branches. This improves the designing of a mechanical part.

Representation of a skeleton of a mechanical part

The invention relates to a computer-implemented method for compressing numerical data comprising a structured set of floating point actual values. A floating point value is defined by a sign, an exponent and a mantissa. The method comprises computing a floating point predicted value related to a target actual value of the set. The computing includes performing operations on integers corresponding to the sign, to the exponent and/or to the mantissa of actual values of a subset of the set. The method also comprises storing a bit sequence representative of a difference between integers derived from the target actual value and the predicted value. Such a method is particularly efficient for reducing the storage size of a CAD file.

Compression and decompression of numerical data

A computer program, system and method of computer-aided design of a 3D object. The 3D object is modeled by: (i) cells, the cells being restrictions of geometries of the model; and (ii) a cell graph comprising relations between the cells, which relations capture a topology of the model. The invention system edits an initial model by interacting with a user to identify intended displacements of initial geometries of the model. The system then selects the cells which are restrictions of the geometries to be displaced. Cells adjacent to the selected cells are collected according to the cell graph. Some of the adjacent cells are excluded by means of predefined rules. A solver computes transformations to be applied to initial geometries, from the intended displacements and geometries whose collected cells are restrictions thereof. Lastly the system builds new geometries according to the transformations and initial geometries.

System and method of computer-aided design of a 3D object modeled by geometries

In a system and method for controlling a reflection line in a CAD system and for adjusting the shape of an object to correspond to a new reflection line, a user sets a reflection line as desired, and at least one constraint on the object. The system determines a shape of the object based on the new reflection line and the constraint. The shape of the object may be determined using energy minimization. Alternatively, the system and method may use vector springs to attract the reflection line to a free-form curve set by the user, and then determine the shape of the object based on the new reflection line and the constraint.

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Suresnes, France

Arnaud Deslandes