【摘要】：研究部分充液球形貯箱內(nèi)的液體在橫向推力作用下發(fā)生大幅晃動(dòng)的等效力學(xué)模型,建模過(guò)程同時(shí)考慮平動(dòng)和轉(zhuǎn)動(dòng)激勵(lì)。建立一種新的等效模型,首次提出液體的靜平衡表面垂直于等效重力方向的假設(shè),將液體的大幅運(yùn)動(dòng)分解為跟隨等效重力的整體運(yùn)動(dòng)和在此基礎(chǔ)上的小幅晃動(dòng),該等效模型能夠更好地模擬液體大幅晃動(dòng)情形。將仿真得到的晃動(dòng)力和力矩與傳統(tǒng)等效模型及Flow-3d的結(jié)果進(jìn)行對(duì)比,驗(yàn)證了新模型的有效性和準(zhǔn)確性。該模型可應(yīng)用于探月軟著陸懸停避障過(guò)程等實(shí)際工程問(wèn)題中。
[Abstract]:The equivalent mechanical model of large sloshing of liquid in a partially liquid-filled spherical tank under transverse thrust is studied. The translational and rotational excitations are taken into account in the modeling process. A new equivalent model is established, and the assumption that the static equilibrium surface of liquid is perpendicular to the direction of equivalent gravity is proposed for the first time. The large motion of the liquid is decomposed into the whole motion following the equivalent gravity and the small sloshing on this basis. The equivalent model can better simulate liquid sloshing. The effectiveness and accuracy of the new model are verified by comparing the simulated sloshing force and torque with the traditional equivalent model and the results of Flow-3d. The model can be applied to practical engineering problems such as hovering and obstacle avoidance process of lunar soft landing.
【作者單位】： 清華大學(xué)航天航空學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(11172145)
【分類(lèi)號(hào)】：V414

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 白冰如;槳轂整流罩的靜平衡與互換[J];航空工藝技術(shù);1994年02期

2 韓維;閻永舉;劉超;;飛機(jī)起飛靜平衡狀態(tài)計(jì)算[J];海軍航空工程學(xué)院學(xué)報(bào);2008年01期

3 ;[J];;年期

，

本文編號(hào)：2297686