# Frame member and load cases
**URL:** https://prepomax.discourse.group/t/frame-member-and-load-cases/2368
**Category:** Feature Requests
**Created:** [January 6, 2025, 4:56pm UTC](https://prepomax.discourse.group/t/frame-member-and-load-cases/2368 "2025-01-06T16:56:25Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Josileissu](https://prepomax.discourse.group/u/Josileissu)
#### Post date: [January 6, 2025, 4:56pm UTC](https://prepomax.discourse.group/t/frame-member-and-load-cases/2368/1 "2025-01-06T16:56:25Z")
Hello prepomax forum members,
There is anyway to analysis a complex load case, load combinations with calculix/prepomax?
And, there is an future development for analysis frame members? In most civil structures i create an dxf.file with lines/polylines describing the members and import on other software and after this place the sections, loads, etc…
Att,
---
### Author:  [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)
#### Post date: [January 6, 2025, 5:01pm UTC](https://prepomax.discourse.group/t/frame-member-and-load-cases/2368/2 "2025-01-06T17:01:13Z")
Load cases as such are not supported but you can split load into multiple steps. Just be careful with the OP=NEW parameter added by default in PrePoMax.
Beam elements are not yet supported (requested here: [Support for beam elements](https://prepomax.discourse.group/t/support-for-beam-elements/1142)) but you can use them in FreeCAD for now.
---
### Author:  [@Josileissu](https://prepomax.discourse.group/u/Josileissu)
#### Post date: [January 6, 2025, 5:10pm UTC](https://prepomax.discourse.group/t/frame-member-and-load-cases/2368/3 "2025-01-06T17:10:03Z")
thanks for quicky answer. I will see the options of freecad for modeling and analysis frame members.
I’ve studied dynamic analysis in the last final year, and the professor, Avelino, say’s about dynamic forces (F(t) = F0.sen(wt+φ)). There is any way to modeling an simple model of this:
||–//--[m] --//--[m]–//--||, with one degree of movement (horizontal) for the masses?
And, maybe, has an forum explain how to apply the senoidal force?
Of course, i wanna test it, in other situations, apply impact force, sismic acceleration, etc…
---
### Author:  [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)
#### Post date: [January 6, 2025, 5:14pm UTC](https://prepomax.discourse.group/t/frame-member-and-load-cases/2368/4 "2025-01-06T17:14:21Z")
Yes, you can simulate such SDOF models in dynamics. There are point masses and spring to ground elements that can be used for this purpose. PrePoMax doesn’t support two-node springs yet ([Spring between two nodes](https://prepomax.discourse.group/t/spring-between-two-nodes/116)) but they can be added via Keyword Editor.
Check this recent post for more details: [2 DoF Mass-Spring System - SPRING2 & SPRINGA Element Types](https://prepomax.discourse.group/t/2-dof-mass-spring-system-spring2-springa-element-types/2308)