1
涓撲笟鐝骇
瀛﹀彿
濮撳悕
鏈烘鎸姩
鏈珷鐭ヨ瘑鐐?/p>
锛氱畝璋愭尟鍔ㄧ殑鐗瑰緛鍙婂叾杩愬姩鏂圭▼锛岀畝璋愭尟鍔ㄧ殑鏃嬭浆鐭㈤噺琛ㄧず娉曪紝鎸姩鐨勮兘閲忥紝绠�璋愯繍鍔ㄧ殑鍚堟垚锛岄樆灏兼尟鍔紝鍙楄揩鎸姩锛?/p>
鍏辨尟
鏈珷閲嶇偣
锛氱畝璋愭尟鍔ㄧ殑鐗瑰緛鍙婂叾杩愬姩鏂圭▼锛岀畝璋愭尟鍔ㄧ殑鏃嬭浆鐭㈤噺琛ㄧず娉曪紝鎸姩鐨勮兘閲忥紝鍚屾柟鍚戝悓棰戠巼绠�璋愯繍鍔ㄧ殑鍚堟垚
涓�銆佸～绌洪
1
锛庝竴涓粰瀹氱郴缁熷仛绠�璋愭尟鍔ㄦ椂锛屽叾鎸箙鍜屽垵鐩镐綅鍐冲畾浜?/p>
銆?/p>
鍜?/p>
锛涘脊绨ф尟瀛愬仛绠�璋愭尟鍔ㄦ椂锛屽叾棰戠巼鍐?/p>
瀹氫簬
鍜?/p>
锛?/p>
2
锛庝竴寮圭哀鎸瓙锛屽脊绨х殑鍔插害绯绘暟涓?/p>
0.32 N/m
锛岄噸鐗╃殑璐ㄩ噺涓?/p>
0.02 kg
锛屽垯杩欎釜绯荤粺鐨勫浐鏈夎棰戠巼涓?/p>
rad/s
锛岀浉搴旂殑鎸姩鍛ㄦ湡
涓?/p>
s
锛?/p>
3
锛庡湪涓や釜鐩稿悓鐨勫脊绨т笅鍚勬偓鎸備竴鐗╀綋锛屼袱鐗╀綋鐨勮川閲忔瘮涓?/p>
4
锛?/p>
1
锛屽垯涓よ�呭仛绠�璋愯繍鍔ㄧ殑鍛ㄦ湡涔嬫瘮涓?/p>
锛?/p>
4
锛庤川鐐瑰仛绠�璋愯繍鍔ㄧ殑浣嶇Щ鍜屾椂闂村叧绯诲鍥?/p>
1
鎵�绀猴紝鍒欏叾杩愬姩鏂圭▼涓?/p>
锛?/p>
5
锛庝袱涓悓棰戠巼鐨勭畝璋愯繍鍔ㄦ洸绾垮鍥?/p>
2
鎵�绀猴紝鍒?/p>
2
x
鐨勭浉浣嶆瘮
1
x
鐨勭浉浣嶈惤鍚?/p>
锛?/p>
6
锛庝袱涓畝璋愭尟鍔ㄦ洸绾垮鍥?/p>
3
鎵�绀猴紝涓や釜绠�璋愭尟鍔ㄧ殑棰戠巼涔嬫瘮
1
2
:
飦?/p>
飦?/p>
飥?/p>
锛屽姞閫熷害鏈�澶у�间箣姣?/p>
a
1m
锛?/p>
a
2m
=
锛屽垵濮?
閫熺巼涔嬫瘮
10
20
:
飥?/p>
v
v
锛?/p>
7
锛庣畝璋愭尟鍔ㄧ殑鏂圭▼涓?/p>
)
cos(
飦?/p>
飦?/p>
飥?/p>
飥?/p>
t
A
x
锛屽娍鑳芥渶澶ф椂浣嶇Щ
x=
锛屾鏃跺姩鑳?/p>
E
k
=
锛?/p>
8
锛庡凡鐭ヤ竴璐ㄧ偣鍋氱畝璋愯繍鍔ㄦ洸绾垮鍥?/p>
4
鎵�绀猴紝鐢卞浘鍙‘瀹氭尟瀛愬湪
t=
s
鏃堕�熷害涓洪浂锛涘湪
t=
s
鏃跺脊鎬у娍鑳芥渶灏忥紱
鍦?/p>
(__________)s
鏃跺姞閫熷害鍙栨鐨勬渶澶у�硷紟
9
锛?/p>
涓や釜鍚屾柟鍚戝悓棰戠巼鐨勭畝璋愭尟鍔紝
鍏跺悎鎸姩鐨勬尟骞呬负
0.20m
锛?/p>
鍚堟尟鍔ㄤ笌绗竴鍒嗘尟鍔ㄧ殑鐩镐綅宸负
60
搴︼紝
宸茬煡绗竴鍒嗘尟鍔ㄧ殑鎸箙涓?/p>
0.10m
锛?/p>
鍒欑浜屽垎鎸姩鐨勬尟骞呬负
m
锛岀浜屽垎鎸姩涓庣涓�鍒嗘尟鍔ㄧ殑鐩镐綅宸负
锛?/p>
10
锛庢煇璋愭尟瀛愬悓鏃跺弬涓庝袱涓悓鏂瑰悜鐨勭畝璋愯繍鍔紝鍏惰繍鍔ㄦ柟绋嬪垎鍒负
)
)(
3
/
4
cos(
10
3
2
1
m
t
x
飦?/p>
飦?/p>
飥?/p>
飩?/p>
飥?/p>
飥?/p>
锛?/p>
)
)(
4
cos(
10
4
2
2
m
t
x
飦?/p>
飦?/p>
飥?/p>
飩?/p>
飥?/p>
飥?/p>
褰?/p>
飦?/p>
=
鏃跺悎鎸姩鐨勬尟骞呮渶澶э紝鍏跺�?
max
A
=
锛涘綋
飦?/p>
=
鏃跺悎鎸姩鐨勬尟骞呮渶灏忥紝鍏跺�?/p>
min
A
=
锛?
11
锛庡浘
5
涓墍绀轰负涓や釜绠�璋愭尟鍔ㄧ殑鎸姩鏇茬嚎锛岃嫢浠ヤ綑寮﹀嚱鏁拌〃绀鸿繖涓や釜鎸姩鐨勫悎鎴愮粨鏋滐紝鍒欏悎鎸姩鐨勬柟绋嬩负
飥?/p>
飥?/p>
飥?/p>
1
1
x
x
x
t/s
7
0
x/m
0.05
0.10
鍥?/p>
1
x
1
x
x
2
t
o
鍥?/p>
3
2
1
x
t/s
0
鍥?/p>
4
鍥?/p>
5
x
2
x
1
x
t
0
鍥?/p>
2