Method for simulating deviations in surface appearance of plastics parts
AssigneeBorealis Technology Oy
InventorsHarald Herbst, Anton Sageder, Thomas Rothmayer, Christof Wurnitsch, Rudolf Woelfer
Life of this patent
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Abstract
A forming process of plastic parts is simulated. The position and time of plastics particles which exceed at least one defined critical limit are detected. The final positions of particles in the surface layer of the plastics part are computed. The positions of the particles in the surface layer are defined as positions with deviations in the surface appearance.
Claims14
Method for simulating deviations in surface appearance of a plastics part caused by a forming process, comprising:
- a) simulating the forming process of the plastics part,
- b) detecting, during the simulation, a position and time of plastics particles of plastics part, in which plastics particles first exceed at least one defined critical limit,
- c) computing final position for surface-layer plastics particles by tracing in simulation all plastics particles, which exceeded the defined critical limit, on their way to the plastics part's surface, and
- d) defining final position for each of the traced surface-layer plastics particles as a position with deviations in the surface appearance among plastics particles formed into the plastics part.
Method for simulating deviations in surface appearance of a plastics part caused by a forming process, comprising:
- simulating the forming process of the plastics part;
- detecting, during the simulation, a position and time of plastics particles of the plastics part for each one of plastics particle that is found to first exceed at least one defined critical limit;
- for said each one of found plastics particle, tracing simulated position of said each one of found plastics particle from the time it first exceeded the at least one critical limit;
- and
- for each one of traced plastics particle that has a final position simulated as being at the surface of the plastics part, identifying said final position as being at a position on the plastic part that corresponds to a simulated deviation in surface appearance on the plastics part that is predicted to occur during the forming process, wherein said traced plastics particle are among the plastics particles that are being formed into the plastics part.
Dependencies are inferred from the claim text.