… for torsion

… for torsion#

For torsion, the assumed strain diagram depends on the cross-section

… in thin-walled circular and closed thin-walled non-circular tubes#

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Fig. 39 Figure 6.8 Hartsuijker and Welleman (2007)#

The strain diagram is parallel to the centre line and are constant over the wall thickness

The thin-walled circular tube is treated in chapter 6.2.1 and the thin-walled non-circular tube in chapter 6.3.1 of the book Engineering Mechanics Volume 2 (Hartsuijker and Welleman, 2007).

… in solid circular bars and thick-walled circular tubes#

../../_images/image_2.png

Fig. 40 Figure 6.14 Hartsuijker and Welleman (2007)#

The strain diagram is parallel to the surface and is proportional to the distance to the axis of the bar.

The solid circular bar is treated in chapter 6.2.2 and the thick-walled circular tubes in chapter 6.2.3 of the book Engineering Mechanics Volume 2 (Hartsuijker and Welleman, 2007).

… in open thin-walled cross-sections#

../../_images/image_32.png

Fig. 41 Figure 6.29 Hartsuijker and Welleman (2007)#

The strain diagram is parallel to the surface, is proportional to the distance to the axis of the bar and flows around near the edges of the strip.

This is treated in chapter 6.3.2 of the book Engineering Mechanics Volume 2 (Hartsuijker and Welleman, 2007).

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