According to Von-Mises' distortion energy theory, the distortion energy under three dimensional stress state is represented by

1 [ 1 + 2 + 3 - 2m( 1 2 + 3 2 + 1 3 )] 3E

1[ 1 + 2 + 3 - 2m( 1 2 + 3 2 + 1 3)] E

1 - 2 [ 1 + 2 + 3 - 2m( 1 2 + 3 2 + 1 3)]6E

1 + [ 1 + 2 + 3 - 2m( 1 2 + 3 2 + 1 3)]3E

1[ 1 + 2 + 3 - 2m( 1 2 + 3 2 + 1 3)]3E

According to Von-Mises' distortion energy theory, the distortion energ

1.	According to Von-Mises' distortion energy theory, the distortion energy under three dimensional stress state is represented by
A.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">[ <sub>1</sub> + <sub>2</sub> + <sub>3</sub> - 2m( <sub>1</sub> <sub>2</sub> + <sub>3</sub> <sub>2</sub> + <sub>1</sub> <sub>3</sub>)]</td></tr><tr><td style="text-align: center;"> E</td></tr></table>
B.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1 - 2 </center></td><td rowspan="2">[ <sub>1</sub> + <sub>2</sub> + <sub>3</sub> - 2m( <sub>1</sub> <sub>2</sub> + <sub>3</sub> <sub>2</sub> + <sub>1</sub> <sub>3</sub>)]</td></tr><tr><td style="text-align: center;">6E</td></tr></table>
C.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1 + </center></td><td rowspan="2">[ <sub>1</sub> + <sub>2</sub> + <sub>3</sub> - 2m( <sub>1</sub> <sub>2</sub> + <sub>3</sub> <sub>2</sub> + <sub>1</sub> <sub>3</sub>)]</td></tr><tr><td style="text-align: center;">3E</td></tr></table>
D.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">[ <sub>1</sub> + <sub>2</sub> + <sub>3</sub> - 2m( <sub>1</sub> <sub>2</sub> + <sub>3</sub> <sub>2</sub> + <sub>1</sub> <sub>3</sub>)]</td></tr><tr><td style="text-align: center;">3E</td></tr></table>
Answer» D. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">[ <sub>1</sub> + <sub>2</sub> + <sub>3</sub> - 2m( <sub>1</sub> <sub>2</sub> + <sub>3</sub> <sub>2</sub> + <sub>1</sub> <sub>3</sub>)]</td></tr><tr><td style="text-align: center;">3E</td></tr></table>

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According to Von-Mises' distortion energy theory, the distortion energy under three dimensional stress state is represented by

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