英语翻译A finite element model was set up to help understa

英语翻译
A finite element model was set up to help understand the behavior of a concrete canoe under various static load cases.Both loading cases on simple supports demonstrated that the canoe acts longitudinally as avariable inertia U section beam subjected to bending loads.The hull of the canoe then acts as a membrane either in traction (upright simply supported) or compression (upside-down simply supported).Transversally,the canoe opens when simply supported and closes when simply supported upside-down.The hull then acts in transverse bending.It is interesting to note that the stresses and strains on upside-down simply supported conditions are considerably lower than for the upright conditions.Therefore,for transportation,the upright loading case is critical.
The canoe’s behavior with two and four paddlers resembles that of the simply supported case but with a variable hydrostatic pressure.The canoe still acts as a U section beam with a variable distributed pressure.In both cases,the canoe is in negative bending longitudinally and in positive bending transversally.The stresses and strains are similar to the ones of the simply supported loading scheme.Depending on the weight of the canoe and the weight of the paddlers,either of these cases can be critical.In the case Apogee 2002,the two paddlers loading case is more critical.The finite element analyses allow to asses the canoe’s behavior in details along with its sub-structures.The ribs considerably stiffen the canoe transversally.The stress field is also affected by the presence of ribs.Understanding the influence of each sub-structure allowed the optimization of the mass and rigidity of the canoe.
In order to validate the model,Apogee 2002 was subjected to in situ tests.During the tests,the loading cases were identical to that studied with the finite element model.The strains measured during the tests match closely the predicted values.It is therefore possible to confirm that the analyses performed with the finite element model are valid and represent accurately the actual behavior of the canoe.
To complete the analyses,dynamic tests were conducted.The test consisted in representing the canoe in racing conditions with two paddlers.The tests proved that the paddle strokes induce very little stress amplification for the hull and sub-structures.The tests also revealed that 1801 turns are not critical compared to straight lines.These tests allowed determining the dynamic amplification factor.A 1.25 dynamic amplification factor must be applied to the canoe and a 2.2 factor must be applied to the results of the more solicited fourth rib only.
别用什么有道 google 百度翻译直接粘贴过来了，这个我也会。

已经有十几个回答,本来不想凑热闹了.但感觉您还不结贴,也许还没有满意的答案.先翻译一段给您看看,如果您需要我继续翻译,请告知.这样就不会浪费双方的时间.

为了帮助了解一艘混凝土划艇在各种静态荷载情况下的反应,因此制作了一个无限元模型.在两种简支承的荷载工况下,划艇都显示犹如一根受弯曲载荷的可变惯性U型截面梁而起纵向作用；接着,艇体本身充当牵引膜的作用（竖直简支承状况）或者是充当压缩膜的作用（颠倒简支承状况）.横向时,划艇在简支承状况下张开,在颠倒简支承状况下则关闭；艇体接着起横向弯曲作用.一个有趣的现象是,在颠倒简支承状况下所受到的应力与应变要比竖直的状况下小许多.所以,在运输时,竖直荷载的情况比较危险.

划艇载有两名和四名划艇者时的反应类似于简支承的情况,但有可变的流体静压；划艇所起的作用还是可变分布压力的U型截面梁.在这两种情况下,划艇是处于纵向的负弯曲及横向的正弯曲状态；而其所受的应力和应变则与简支承的加载方案相似.无论是根据划艇的重量或是划艇者的重量,两种情况都危险.以2002年的Apogee技术节为例,更危险是载荷两名划艇者的情况；通过有限元分析其子结构可以详细地评估划艇的反应动作.艇肋对划艇施予不小的横向加劲,艇肋也影响其应力场.了解每个子结构的的影响力能优化划艇的质量和刚度


这是加拿大2008年全国男女生4人组混凝土划艇比赛.

【英语牛人团】