- 産業: Software
- Number of terms: 1241
- Number of blossaries: 0
- Company Profile:
Moldflow develops plastic injection molding software.
This is the name of a family of materials, for example, Polycarbonate. Each material is a member of a family of materials.
The shortened version of a family name is the family abbreviation. For example, PC is the family abbreviation for Polycarbonate.
Some families contain subsets, and there is an abbreviation for each subset. For example, TPE, TPO, TPU, and TPR are family abbreviations within the Thermoplastic Elastomer family.
Industry:Software
This is the position of the screw when the machine switches the screw displacement control from velocity control (used in the filling stage), to pressure control (used in the packing stage.)
Industry:Software
This is the shortened version of a material family name. For example, PC is the family abbreviation for the family name Polycarbonate.
Some families contain subsets, and there is an abbreviation for each subset. For example, TPE, TPO, TPU, and TPR are family abbreviations within the Thermoplastic Elastomer family.
Industry:Software
Unbalanced flow occurs when polymer melt completely fills some flow paths in the mould before other flow paths have filled.
Industry:Software
Uni-directional flow is flow in one direction, with a straight flow front, during the filling phase. This is desirable because it improves the mechanical properties and quality of the part. Flow direction is determined by polymer injection location.
Industry:Software
Voids are caused by the plastic pulling away from the middle of the part as the molten plastic cools. The problem is material shrinkage during the cooling phase. Voids are a cosmetic defect if the part is transparent and can be a structural defect if the void is large.
Eliminate voids by using proper cavity pressurisation in the packing phase.
Industry:Software
Warpage is a part defect caused by a non-uniform change of internal stresses.
Industry:Software
When a polymer flows through a large cross-section to a smaller one, it will extend longitudinally. This will result in a pressure drop that will be dependent upon the extensional viscosity of the particular material.
In practical injection moulding situations, this pressure drop due to extensional effects is often seen when a material flows from a large runner into a very small gate. The change in cross-section is sudden and severe, resulting in a large pressure drop across the gate.
Industry:Software
When air is trapped within the cavity, for example, at the last point to fill in the mould or at weld lines, blackening or "dieseling" of the part can occur. Venting involves making a minor modification to the mould in the problem area so that entraped air can escape.
Industry:Software
When you mesh a model, model nodes are converted to mesh nodes and additional mesh nodes are generated. Mesh nodes are the vertices of Midplane, Fusion, and 3D mesh elements and the ends of beam elements. The graphic below shows mesh nodes at the vertices of a triangular element and a beam element.
When you run an analysis, certain results are recorded at mesh nodes.
Industry:Software
