Defining loads for JOINTG using LOADJG
Altair EmployeeLOADJG for JOINTG Elements
1. LOADJG Basic Parameters
Defines loading for joint connector JOINTG . Loading on a joint can be applied using LOADJG entry or via other external loads.
If the VALUE field for a particular dof on LOADJG bulk data entry is positive (tensile), then opposing forces are internally applied on the grid points to cause a corresponding increase in the value of u rel, where, u rel = uGID2 – u GID1 . Similarly, a negative (compressive) LOADJG will lead to forces which act on the joint to decrease the value of u rel.
Format
Where,
| Field | Contents |
| ID | Load set identification number. (Integer > 0) |
| TID | Identification number of a TABLEDi entry that defines loading scale factors versus time. The loads on the VALUE fields are multiplied with the scale factors to determine time-dependent loads on the joint degrees of freedom. Default = blank (Integer > 0) |
| JIDi | Identification number of a JOINTG Bulk Data Entry on which the loading is to be applied. |
| DOF | Degree of freedom component number. No default (Integer 1 through 6) |
| VALUE | Load value to be applied on the identified degree of freedom for the specified JOINTG joint. No default (Integer > 0) |
2.Creating LOADJG
- Go to Model Browser.
- Right click>Create >Create Load Collector.
- Provide required name for load collector.
- Provide required number of LOADJG needed in LOADJG_Num set Field
- In JID field select required JointG element
- Specifiy required degree of freedom in DOF field
- Enter the load value to be applied in VALUE field
3.Loadstep
- Go to model browser
- Right click>Create >Create Load step
- Select analysis type as Nonlinear static
- Scroll down to find LOADJG field
- Click to select respective LOADJG load collector
- Click Ok to close the panel
