»ùÓÚCEL·½·¨ÓÍÏäµøÂä¹ý³Ì½á¹¹¶¯Ì¬Ó¦Á¦·ÖÎö

ÁõÕñ¹â£¬ºÎÐËÔÆ*£¬ÍõÓÀÇÚ

£¨½­Â´»úµç¼¯ÍÅÓÐÏÞ¹«Ë¾£¬ºþÄÏ Ïæ̶ 411100£©

ÕªÒª£º¿ÕͶ³µÁ¾×Ž¹ý³ÌµÄ³å»÷Ó¦Á¦·Ö²¼×´Ì¬Ó°Ïì¿ÕͶ³µÁ¾ÓÍÏäµÄ·þÒÛ¿É¿¿ÐÔ¡£Õë¶Ô¿ÕͶ³µÁ¾µøÂä¹ý³ÌÓÍÏä½á¹¹µÄ³å»÷Ó¦Á¦¹æÂÉÑо¿£¬½¨Á¢Á˳äÓÍ75%µÄÓÍÏäÓÐÏÞԪģÐÍ£¬²ÉÓÃCEL·½·¨¶ÔÓÍÏä½øÐÐÁ÷¹ÌñîºÏ¼ÆË㣬½áºÏʵ³µ¿ÕͶÊÔÑ飬·ÖÎöÁËÓÍÏä±¾Ì嶯̬ӦÁ¦·Ö²¼ÒÔ¼°ÒºÌå״̬¡£½á¹û±íÃ÷£ºµøÂä³å»÷¹ý³Ì£¬ÓÍÏä¿ÇÌåÓëÄÚ²¿¸ô°å·­±ß´î½ÓλÖô¦Ó¦Á¦×î´ó£»ÓÍÏäµ×²¿Ï𽺻º³åµæÊǽµµÍÓÍÏä½á¹¹¶¯Ì¬Ó¦Á¦µÄÓÐЧÐÎʽ£¬»º³åµæ½Ó´¥Ãæ»ý´ïµ½Ô­À´µÄËı¶£¬ÓÍÏä½á¹¹¶¯Ì¬Ó¦Á¦Ï½µ10 MPa¡£Ñо¿½á¹û¶Ô¿ÕͶ³µÁ¾ÓÍÏä·þÒÛ¿É¿¿ÐÔÌáÉýÓÐÖØÒªµÄÀíÂÛÖ¸µ¼£¬Ò²¿ÉΪ¿Õ½µ³µ¿ÕͶ½á¹¹Éè¼ÆÓëУºËÌṩÀíÂÛÒÀ¾Ý¡£

¹Ø¼ü´Ê£ºµøÂä³å»÷£»¶¯Ì¬Ó¦Á¦£»CEL·½·¨£»Á÷¹ÌñîºÏ

ÖÐͼ·ÖÀàºÅ£ºTH122 ÎÄÏ×±êÖ¾Â룺A doi£º10.3969/j.issn.1006-0316.2023.03.002

ÎÄÕ±àºÅ£º1006-0316 (2023) 03-0008-07

Structural Dynamic Stress Analysis of Fuel Tank During Dropping Process Based on CEL Method

LIU Zhenguang£¬HE Xingyun£¬WANG Yongqin

( Jianglu Electromechanical Group Co., Ltd., Xiangtan 411100, China )

Abstract£ºThe impact stress distribution state during the landing process of airdrop vehicles restricts the service reliability of lightweight fuel tank of airdrop vehicles. In order to study the impact stress of the fuel tank structure during dropping process of airdrop vehicle, the finite element model is established. Fluid-solid coupling analysis of the fuel tank is carried out using CEL methods. Combined with the real vehicle drop test by giving the tank 3m/s of the initial drop impact velocity, the dynamic stress distribution and liquid state of the tank body are obtained by simulation. The results show that the maximum stress is at the overlapping position of the fuel tank shell and the inner diaphragm flange. Using rubber cushion at the bottom of oil tank can reduce the dynamic stress of oil tank structure effectively. When the contact area of the cushion is 4 times of the original, the dynamic stress of the oil tank structure decreases by 10 MPa. The results can provide a basis for lightweight design and verification of airdrop structure  and important theoretical guidance for lightweight design of airdrop vehicle fuel tank.

Key words£ºdrop impact£»dynamic stress£»CEL method£»fluid-solid coupling

———————————————

ÊÕ¸åÈÕÆÚ£º2022-09-19

»ù½ðÏîÄ¿£º¾üί¿Æ¼¼Î¯ÏîÄ¿£¨18-H863-03-2T-003-009-02£©

×÷Õß¼ò½é£ºÁõÕñ¹â£¨1987£­£©£¬ÄУ¬½­Î÷ÉÏÈÄÈË£¬Ë¶Ê¿Ñо¿Éú£¬¹¤³Ìʦ£¬Ö÷ÒªÑо¿·½ÏòΪ½á¹¹Õñ¶¯¿ØÖÆ¡¢½á¹¹·ÂÕæ·ÖÎö£¬E-mail£º492954562@qq.com¡£*ͨѶ×÷ÕߣººÎÐËÔÆ£¨1979£­£©£¬ÄУ¬ºþÄÏÏæ̶ÈË£¬Õý¸ß¼¶¹¤³Ìʦ£¬Ö÷ÒªÑо¿·½ÏòΪÌØÖÖ³µÁ¾×ÜÌå¼¼Êõ£¬E-mail£ºhexinyun_jl@126.com¡£