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REXS V1.7

Shafts

shaft.png

A shaft consists of:

  • 1 shaft (shaft)

  • n shaft sections (shaft_section)

and is connected to the gear unit via an assembly relation.

Modeling Guideline Static Analysis

Each shaft must have at least one shaft section.

Required components

XML syntax

Shaft

<component id="3" type="shaft"> ... </component>

Shaft section

<component id="113" type="shaft_section"> ... </component>

Required relations

XML syntax

Assembly relation

Shaft - shaft section

<relation id="1" type="assembly">
	<ref id="3" role="assembly" hint="shaft"/>
	<ref id="13" role="part" hint="shaft_section"/>
</relation>

Assembly relation

Gear unit - shaft

<relation id="2" type="assembly">
	<ref id="1" role="assembly" hint="gear_unit"/>
	<ref id="3" role="part" hint="shaft"/>
</relation>
Table 5. Example - model of a shaft with two sections
shaft_assembly.png
shaft_sections.png


Modeling Guideline Static Analysis

The mechanical model must be statically determined; no (excited) rigid body modes may remain in the system.

In particular, this means that each shaft must be supported in the inertial system by at least one connecting component. Possible connecting components are:

  • Bearings

  • Couplings

  • Switchable coupling

  • Shaft-hub connection