Core Placing Operation for Hand Layup

Core placing is a labor-dependent task (see Labor-dependent and Labor-independent Tasks).

Layup Time = Core Template Location + (Core Perimeter / Core Layup Rate)

The time to lay up the current core depends on the following:

• Core template location: this is the time to locate a core placement template on the layup tool. It is specified by the cost model variable coreTemplateLocationTime (120 seconds in starting point VPEs).

• Core perimeter: specified by the geometric property Perimeter.

• Core layup rate: this is the rate, in length per unit time, at which a portion of the boundary of the core can be aligned with the template. The cost model assumes that only the perimeter of the core requires alignment. The rate is specified by the cost model varaiable coreLayupRate (100 millimeters per second in starting point VPEs).

Core Material Cost

Material cost is taken from the GCD property Purchase Price, if available. Otherwise, material cost is given by the following formula:

Calculated Material Cost = (Core Surface Area / 2) * Core Cost per Area

Calculated material cost for a core depends on the following:

• Core surface area: specified by the geometric property Surface Area.

• Core cost per area: specified by the Purchase Price geometric property of the Core GCD. If the property is not populated, this is looked up by the core’s Material Name in the Materials table. If the core’s material name is not found, the cost model uses the name specified by the cost model variable defaultCoreMaterial (Generic Core Material in starting point VPEs).