tailieunhanh - Tyre Vehicle Dynamics 2011 Part 2

Tham khảo tài liệu 'tyre vehicle dynamics 2011 part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 7 5 S. 5 7 5 67 631 9 a- 17 1 31 67 7 Stability of the Motion at Large Lateral Accelerations 7KHQRQ0LQHDUVHWRIHTXDWLRQV PD EH0LQHDULVHGD RSHUDWLRQQWKDWZLVRC URKWMWHWmWHGaDERYH 7KHUHV VHFRQGRUGHUtGLIIHUHQWLDOfflTXDWLRQKDVOS WUXFWXUHS LI EXWZLWKWKHYDULDEGHEWKHSOD PDOOYDULDWLRQVZLWKUF VWHDGWWBW0EWERQHLGHUHGm QDO VLVDRlDWKHDFRHIILFLH FKDUDFWHULVWLFfflTXDWLRQCUHYHDOVaLlữ WDELOLW ffl LVWW RRQRWRQRXVnRVFLOODWRU ntROORZVIURPMVKHVH VHGIEEWmW W SHERIEVLQJXODUũSRLQWVnQRGHffiVSLUDO VDGGOHfflLIHSUHVF VROXWLRQVELQIWKH SKDVH1SODQH UDVO VUH DWHG BLQO VKHI QH WtV W QRZaA XUQV RXWBA KDWaQRWRQO aA KH ODVW FRHIILFLHQV DOVRWKH B H FRQG ERHWWHffiKWI WKHERIIQHukCGHWIHGWWKF-RULJLQDRIDWKHQMUIHDFRUQHuLQJDFKDUDFWHuLVWLFV WKHDV FKDUDFWHULVWLFV DW DạỊg KR RMVI8MmRI LPSRUWDQFHMH GF 0 - -222 z 1 2 m F a zi i 7KHFRQGLWLRQVIRUVWDELOLW WKDWLV EVHFRQGEDQGeODV FRPSDUDEOH CZLWK PXVW EH SRVLWLYH fflLIHDG 3DIWH u KDYL UDGLXV RI J lWWLRQn kũ aữ Ị I kũ bữ Ị 2 Ồ mm 7KH VXEVFimMHUV WR WKH FRQGLWLRQ RI GUUMHBQVWIEUJWMRESCS WKDWdlVZKLOH 5 WD LQJ RQB VKH 5 SH HG OLQHQGl V JLRQ7KHmjvv EH YLRODWHGtZKHQtZHGHDOtZLWKQ VMJHEKDUDFWHULVWLFVfl KF DQG GRZQZDUGVS ORSLQJ mwm UTOA IWIEVWLF OTKH S H FRQG E FRUUHVSRQGV VR FRQGLWLRQmntRU VKH OLQHDU PRGHOE FFF H SHFWHGữA R FFXUÍH RQGữA KH RLQWEZKHUHữA KHa WHHUaDC ZKLOH fflVKH VSHHG LV NHSWERQVWDQWMMERKMLiroB VKH RYHLA u DQJ H CR8H u DWLRQ Ũ Q O VKH CKDQGOLQJ DGLDJ u DP Ũ VKH CVWDELOL DVVH VVH G E 1LQGLQJ B VKH WDQ J HQW WR 0 VKH ZKDQGOLQJ FXU YH VSHHGtOLQHEFRQVLGHUHGm QWKHXSSHUGLDJUDPRI LJ WKHVWDELOLWVERXQGDU V u LJ KWSDUWERI WKHí GE MJ KĐVEH HQ ffiu DZQ BRU B VKH S XVWH PR 15 WKDWOKHvau0ESM-DOXQGH uVWH H u B VR RYH uVWH H U Q B VKH PLG nn 7 5 5 7 5 67 6 1 9 H- 17 1 1 67 7 of shifted F-lines each for a different steer angle Ỏ has been indicated. In each case the points of intersection represent possible steady-state solutions. The highest point represents an unstable solution as the corresponding point on the speed line lies in the unstable area. When the steer angle is .