英语翻译Although this expression for the tangent modulus value could be employed incremental stress analyses,it has one significant shortcoming:The value tangent modulus,Et,is related to both stress difference and strain [(σ1-σ3 ) and ε],which

英语翻译Although this expression for the tangent modulus value could be employed incremental stress analyses,it has one significant shortcoming:The value tangent modulus,Et,is related to both stress difference and strain [(σ1-σ3 ) and ε],which
英语翻译
Although this expression for the tangent modulus value could be employed incremental stress analyses,it has one significant shortcoming:The value tangent modulus,Et,is related to both stress difference and strain [(σ1-σ3 ) and ε],which may have different reference states .Although the reference state for stress difference [(σ1-σ3 ) =0] can be specified exactly,the reference state for strain(ε=0) is completely arbitrary.Thus,for example,the initial condition of a soil mass,before some external loading is applied,may rationally be referred to as the undefarmed state,or state of zero strain.The same condition,however,could not be referred to as the state of zero stress difference if the mass contained nonhydrostatic stresses as a result of body forces or any other influence.For the purpose of analyzing the effects of newly applied external loads,therefore,the initial condition could be chosen as the reference state for strain but not for stress difference.Although the conditions of zero stress difference and zero strain coincide in the tests described previously,they do not in many important soil mechanics problems.Therefore,the expression for tangent modulus may be made more generally useful if it is made independent of stress or independent of strains.Because the reference state for strain is chosen arbitrarily,and because stresses may be calculated more accurately than strains in many soil mechanics problems,it seems logical to eliminate strain and express the tangent modulus value in terms of stress only.
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英语翻译Although this expression for the tangent modulus value could be employed incremental stress analyses,it has one significant shortcoming:The value tangent modulus,Et,is related to both stress difference and strain [(σ1-σ3 ) and ε],which
尽管切线模量值的这种表示可以运用到增量应力分析中,它仍有一个明显的缺点：切线模量值Et,与参考状态不同的应力差和应变都有联系.尽管应力差的参考状态可以明确指定,但应变的参考状态完全是任意的.例如,在施加外部荷载之前,一个土堆的初始应力可以在理性上被称为未变形状态,或零应变状态.然而,如果大量包含体应力或任何其他影响所产生的非静应力,同样的状态不能被称为零应力差状态.因此,以分析新施加的外部荷载的效果为目的,初始状态可以被选择作为应变参考状态而不是应力差参考状态.尽管测试中的零应力差状态和零应变状态被预先表述,它们并不存在于许多土力学问题当中.因此,如果切线模量在独立的应力或应变中获得,那么它的表达式会变得更加有用.由于应变参考状态被任意选择,又因为在许多土力学问题中应力比应变的结果更加精确,消除应变并在只有应力存在的条件下表达切线模量是合乎逻辑的.

The goods cannot be delivered on 5th.Also,the other 6000 sets of products cannot go into the storage completely.Perhaps,it is possible to complete the storing within 2 or 3 days.