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When a fighter aircraft or missile flies at high angle of attack, asymmetric vortex es are produced from the forebody and induce strong side force and yawing moment.

飞机或导弹在大迎角下飞行时会形成非对称涡,从而产生很大的侧滑力和偏航力矩。

Slender body is a widely used forebody configuration for modern advanced fighters and tactic missiles.

现代先进战斗机和战木导弹常具有细长前体,大攻角条件下前体背风面会形成非对称涡结构,从而产生很大的侧向力和偏航力矩,这会严重影。。。

In this dissertation, two methods were adopted to build dynamics model for vehicle ride comfort analysis: one is eight freedom vehicle ride comfort differential equation model in which lateral movement of driver and vehicle body was considered. Combined with time domain model of random road input, we got the driver and vehicles moving displacement.

本文采用两种方法建立了车辆平顺性分析的动力学模型:8自由度车辆平顺性分析的微分方程模型,考虑了驾驶员和车体的侧倾,结合随机路面激励的时域模型,在B级路面输入条件下,进行了时域仿真求解,得到车辆和驾驶员在汽车坐标系中各个方位上随时间历程的运动位移;利用ADAMS软件建立的福田小卡汽车,共计596个自由度的三维实体整车虚拟汽车模型,全面地考虑了影响平顺性的各种因素,然后通过对路面功率谱的变换生成适合于ADAMS/Tire的路面文件,实现了整车虚拟样机在随机输入激励下,车辆振动模型的时域仿真求解。

In this dissertation, two methods were adopted to build dynamics model for vehicle ride comfort analysis: one is eight freedom vehicle ride comfort differential equation model in which lateral movement of driver and vehicle body was considered. Combined with time domain model of random road input, we got the driver and vehicle's moving displacement. The other method, we built a Forland truck virtual prototyping using ADAMS, it is a 3D machine model, totally with 596 freedom degrees, every factor that influences the vehicle ride comfort was considered, finally complete the time domain simulation on random road input.

本文采用两种方法建立了车辆平顺性分析的动力学模型:8自由度车辆平顺性分析的微分方程模型,考虑了驾驶员和车体的侧倾,结合随机路面激励的时域模型,在B级路面输入条件下,进行了时域仿真求解,得到车辆和驾驶员在汽车坐标系中各个方位上随时间历程的运动位移;利用ADAMS软件建立的福田小卡汽车,共计596个自由度的三维实体整车虚拟汽车模型,全面地考虑了影响平顺性的各种因素,然后通过对路面功率谱的变换生成适合于ADAMS/Tire的路面文件,实现了整车虚拟样机在随机输入激励下,车辆振动模型的时域仿真求解。

In 13 cases(28.26%),the long-line or triangle shaped infarcts areas usually located at marginal zones between the superficial and deep territory of the middle cerebral arteries in the basal ganglia and posterolat eral angulus frontalis.

皮层下型13例,占28.26%,病灶在大脑中动脉皮层支和深穿支供血的交界区,多位于侧脑室额角后外方和基底节,呈三角形或长条状。

When gear-driven, the suction chamber side gear teeth withdraw mutually place the space between teeth volume increases gradually, pressure drop, the liquid enters the space between teeth under the differential pressure function.

齿轮转动时,吸入腔侧轮齿相互脱开处的齿间容积逐渐增大,压力降低,液体在压差作用下进入齿间。

Of the 26 cases, 20 were treated using the method of aliform separation of glans, of the other 6 cases whose glandes were poorly developed were treated using the method of aliform separation of glans combined with compacted ventral pedicle preputial flap.

对一组尿道下裂修复术的龟头塑形方法进行分析,26例患者,20例采用翼状分离龟头成形,6例龟头发育较差者,采用翼状分离加龟头腹侧带蒂包皮瓣嵌插成形以增大龟头。

The resulting polymer undergoes hydrogenolysis at atmospheric pressure in the presence of a palladium on charcoal and the pendant benzyl group was removed completely.

所得聚合物在Pd/C催化下氢解,可以定量地去除苄基保护基,从而得到侧链带有羟基的新型功能性可生物降解聚酯。

Bilateral atrophy may occur with a variety of conditions including chronic alcoholism, hypopituitarism, atherosclerosis, chemotherapy or radiation, and severe prolonged illness.

双侧睾丸萎缩在多种情况下都能发生,包括慢性酒精中毒、垂体功能减退、动脉粥样硬化、化疗或放疗以及严重的迁延性疾病。

Methods 20 Chinese adult cadavers (40 sides) were dissected and the innervation of the trapezius muscle was examined.

方法取 2 0具中国成年人尸体,在头戴式放大 5倍显微镜下,解剖观察 40侧斜方肌的神经支配及其行径。

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