1. Trang chủ
  2. » Kỹ Thuật - Công Nghệ

Tyre Vehicle Dynamics 2011 Part 14 ppt

40 181 0

Đang tải... (xem toàn văn)

Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống

THÔNG TIN TÀI LIỆU

Thông tin cơ bản

Định dạng
Số trang 40
Dung lượng 0,94 MB

Các công cụ chuyển đổi và chỉnh sửa cho tài liệu này

Nội dung

$IWHUDGGLQJWKHGLVVLSDWLRQIXQFWLRQ'WRLQFOXGHGDPSLQJLQWKHV\VWHPWKHVHHTXDWLRQV UHDG IRU WKH YDULDEOHV Y DQG U GRGW DQG VXEVHTXHQWO\ IRU WKHUHPDLQLQJJHQHUDOLVHGFRRUGLQDWHVTM KHUHM RU L XULW

Trang 2

7\UH)RUFHDQG0RPHQW5HVSRQVH/LQHDU0RGHO

Trang 3



Trang 4

 

Trang 6

α

] ]R

rear tyre ) = ) = 2094N ) [ = -1368N

Trang 7

$IWHUDGGLQJWKHGLVVLSDWLRQIXQFWLRQ'WRLQFOXGHGDPSLQJLQWKHV\VWHPWKHVHHTXDWLRQV UHDG IRU WKH YDULDEOHV Y DQG U GRGW  DQG VXEVHTXHQWO\ IRU WKHUHPDLQLQJJHQHUDOLVHGFRRUGLQDWHVTM KHUHM RU 

L XULWKHYHKLFOHZHLJKWPJDQGWKHDHURG\QDPLFGUDJ)GDQGORQJLWXGLQDOIRUFH)[WRWDUHTXDQWLWLHVRIWKH]HURWKRUGHURIPDJQLWXGHZKHUHDVWKHYDULDEOHVYDQGWKHJHQHUDOLVHGFRRUGLQDWHVDUHRIWKHILUVWRUGHURIPDJQLWXGH$OVRWKHLPSRVHGODWHUDORIIVHW\PURIWKHFRPELQHGPDLQIUDPHDQGULGHUPDVVFHQWUHLVFRQVLGHUHGDVDTXDQWLW\RIWKHILUVWRUGHURIPDJQLWXGH3URGXFWVRIILUVWRUGHURIPDJQLWXGHTXDQWLWLHVEHFRPHWHUPVRIWKHVHFRQGGHJUHH7HUPVRIKLJKHUGHJUHHZLOOEHQHJOHFWHGDVWKHVHZRXOGJLYHULVHWRVHFRQGRUKLJKHUGHJUHHWHUPVLQWKHILQDOGLIIHUHQWLDO HTXDWLRQVZKLFKZHLQWHQGWRNHHSOLQHDU RQO\ILUVWGHJUHHWHUPV 

7KHSLWFKDQJOH RIWKHPDLQIUDPHZKLFKGRHVQRWUHSUHVHQWDGHJUHHRIIUHHGRPLVRIWKHVHFRQGRUGHURIPDJQLWXGHDQGVKRXOGEHDFFRXQWHGIRULQWKHH[SUHVVLRQVIRUWKHHQHUJLHV([SUHVVHGLQWHUPVRIWKHJHQHUDOLVHGFRRUGLQDWHVZHILQGWKHVHFRQGGHJUHHFRQVWUDLQWHTXDWLRQFI(TV  

Trang 10

 &]P' KP &n %EF &\Pn  )RUERG\ZLWKFJODWHUDORIIVHW\U

 &]U' KU& KU&VU n&VU n%nU %EF &\Un  )RUERG\

 &]I' KI&KIn&HI n&HI VLQg% EF%DI )\ &)  N&)  N  0

 JY JYRXJU JURXJGn JGnR XXF X

Jn JnRJG  JG RXJ JR  7KHVWHHUWRUTXH0 LVFRQVLGHUHGWRDFWLQDGGLWLRQWRWKHVWDELOLVDWLRQVWHHUWRUTXH WKDW UHVXOWV IURP IHHGEDFN FRQWURO DQG LV UHSUHVHQWHG E\ WKH WHUPVFRQWDLQLQJWKHFRQWUROJDLQVLQ(T  

)RUWKHPDVVFHQWUHODWHUDORIIVHWZHKDYHLQWURGXFHGIRUDEEUHYLDWLRQ

PPU\PU PP\PPU\UZLWKPPU PPPU  ,IWKHVWHHUDQGUROODQJOHVUHPDLQVXIILFLHQWO\VPDOOVRWKDWLWPD\EHDVVXPHGWKDWJHRPHWULFOLQHDULW\VWLOOSUHYDLOVZHPD\LQYHVWLJDWHWKHLQIOXHQFHRIODUJHUZKHHOVOLSE\XVLQJIRUWKHW\UHVLGHIRUFHVDQGPRPHQWVWKHQRQOLQHDUIXQFWLRQVRI L L LZKHHOORDG)]LDQGWKHEUDNLQJGULYLQJIRUFH)[LDFFRUGLQJWRWKH(TV  

)RU WKH EDVHOLQH FRQILJXUDWLRQ RI WKH OLQHDU YHKLFOH PRGHO WKH ULGHU LVFRQVLGHUHGULJLG Fn  U64 :LWKWKHULGHUXSSHUWRUVRUHOHDVHGWKHSDUDPHWHUYDOXHVRI7DEOHKROG7KHW\UHVSDUDPHWHUYDOXHVKDYHEHHQFKRVHQDVOLVWHGLQ7DEOH7KHPRGHOFRQILJXUDWLRQPD\EHFRQVLGHUHGDVW\SLFDOIRUDKHDY\PRWRUF\FOH:KHQDULJLGO\FRQQHFWHGULGHUXSSHUWRUVRLVFRQVLGHUHG EDVHOLQHFRQILJXUDWLRQZLWKnU  WKHUHOHYDQWSDUDPHWHUVUHVXOWIURP(TV  )RUWKHOLQHDUV\VWHPGHILQHGWKHHLJHQYDOXHVDQGWKHVWHDG\VWDWHVWHHUDQJOHDQGVWHHUWRUTXHSHUXQLWSDWKFXUYDWXUHKDYHEHHQHVWDEOLVKHGIRUDVHULHVRIYDOXHVRIWKHVSHHGRIWUDYHOX 9 ,QDGGLWLRQDQXPEHURISDUDPHWHUVUHODWHG

Trang 15

 02725&<&/('<1$0,&6

WRERWKWKHYHKLFOHFRQVWUXFWLRQDQGWKHW\UHVKDYHEHHQFKDQJHGLQYDOXHWRH[DPLQHWKHLULQIOXHQFH

7DEOH3DUDPHWHUVRIYHKLFOHLQEDVHOLQHFRQILJXUDWLRQEXWZLWKULGHUXSSHUWRUVRUHOHDVHG

PP NJ PI NJ PV NJ PU NJ,P[ NJP ,P] NJP ,P[] NJP ,U[ NJP

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

Trang 16

weave

Trang 17

 02725&<&/('<1$0,&6

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nUDSSHDULQWKHULJKWKDQGPHPEHUV7KHW\UHVLGHIRUFHVDQGPRPHQWVDUHWHQWDWLYHO\SXWRQWKHULJKWKDQGVLGHDVZHOO,QWKHHTXDWLRQIRUWKHVWHHUDQJOHWKHFRQWUROWHUPVKDYHEHHQDGGHG

Trang 14< /span>

02725&<&/(''<1$0,&6

)\

Ngày đăng: 11/08/2014, 18:21