Dispensing Result Types

Review material behavior through the Filling stage.

Table 1.

Result Type	Description
Temperature	Review the temperature evolution of the material entering the part cavity. Check regions for excessive heating or cooling. Determine the appropriate fill speed for uniform temperature distribution.
Head ID	Review filling results for material coming from a particular nozzle.
Material ID	Review the interaction of different materials during the filling stage.
Density	Consider material density through the progression of the filling stage.
Pressure	Review the impact of pressure on the material during the filling stage.
Residual Pressure	Review changes in material residual pressure during the filling stage.
Velocity	Review the velocity of the fluid material to detect turbulences that can cause defects. Velocity is affected by pressure, housing cavity shape, and other factors.
Viscosity	Review the dynamic viscosity of the fluid material. Viscosity will increase over the course of the process.
Air Flow	View the behavior of air inside the housing during the dispensing process. As material enters the cavity, air inside the housing can push out through vents, parting lines, and filling systems as applicable.
Shear Rate (1/s)	Review the rate at which a progressive shearing deformation is applied to the material during the filling process. You can use this result as an indicator of surface defects along with the shear stress result. Higher shear rates generally indicate more deformation.
Shear Stress	Shear stress is one of the forces that can cause deformation of the material by slippage along a plane. You can use this result along with the viscosity and shear rate results to predict surface defects. You can also use this result as an indicator for resistance to filling.
Conductivity	The conductivity result refers to the effective thermal conductivity of the polyurethane foam material. This value represents the material's ability to conduct heat. It helps evaluate the insulating performance of the material, typically expressed in units of W/(m·K).
Specific Heat	The specific heat result is crucial for modeling heat transfer and temperature distribution during the material's reaction. It is typically expressed in units of J/(kg·K). In the process, the specific heat may vary dynamically due to chemical reactions, temperature changes, and the evolving structure of the material.
Curing Rate	Review the rate at which the material cures during the Filling stage.

Review the behavior of the material in relation to the model's housing parts in the filling stage.

Table 2.

Result Type	Description
Mold Temperature	Review the temperature variance in the housing parts throughout the filling stage.

Review material behavior through the Curing stage.

Table 3.

Result Type	Description
Temperature	Review the temperature evolution of the material as it cures. Check regions for excessive heating or cooling.
Head ID	Review curing results for material coming from a particular nozzle.
Material ID	Review the interaction of different materials during the curing stage.
Density	Consider changes in material density through the progression of the curing stage.
Pressure	Review changes in material pressure during the curing stage.
Residual Pressure	Review changes in residual material pressure during the curing stage.
Velocity
Viscosity	Review the dynamic viscosity of the material as it cures.
Air Flow	View the behavior of air inside the housing during the curing process. As material expands or contracts, air inside the housing can pass through vents, parting lines, and filling systems as applicable.
Shear Rate (1/s)	Review the rate at which a progressive shearing deformation is applied to the material during the curing process. Because the velocity difference is large and the shear rate increases on the housing surface, you can use this result as an indicator of surface defects along with the shear stress result.
Shear Stress	Shear stress is one of the forces that can cause deformation of the material by slippage along a plane. You can use this result along with the viscosity and shear rate results to predict surface defects.
Conductivity	View changes to the material's conductivity during the curing stage.
Specific Heat	Review changes to the material's specific heat during the curing phase.
Curing Rate	Review the rate at which the material cures during the curing stage.

Review the behavior of the material in relation to the model's housing parts in the curing stage.

Table 4.

Result Type	Description
Mold Temperature	Review the temperature variance in the housing parts throughout the curing stage.

Review a range of defects that can occur at the end of the dispensing process. Result types for this stage include: Air Pressure, Filling Time, Surface Defect Modulus, Shrinkage Defect Modulus, Weld Lines, and Weld Lines Movement.

Table 5.

Result Type	Description
Air Pressure	Display the accumulated air pressure effects on the part at the end of the simulation. Look for porosity and void defects.
Filling Time	Review the time the material takes to reach different areas of the mold. Consider adjustments to the nozzle paths and flow rate.
Weld Lines	Weld lines occur when two separate fluid streams recombine as a result of multiple nozzles or the shape of the part. Material does not bond perfectly along weld lines, which can cause cosmetic imperfections and structural weakness. The Weld Lines result shows the initial position of weld lines in the part.
Weld Lines Movement	Weld lines can shift position as the fluid material settles in the housing part or flows due to capillary action. The Weld Lines Movement result shows the final position of weld lines in the part.
Shrinkage Defect Modulus	Shrinkage is the increase in the part's density from the end of the filling stage to when the part has cooled to the ambient temperature. High shrinkage can lead to voids or sink marks in the finished product.