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| |  | ||   / _ \\   |__  //   /_   _//  |__  //  
| |/\| ||  | / \ ||    / //     -| ||-     / //   
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|_// \_||   \___//   /_____||  /_____//  /_____|| 
`-`   `-`   `---`    `-----`   `-----`   `-----`

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Text this: Strain softening and instability of sand under plane-strain conditions