四套材料力学试题及参考答?- 百度文库 ر

ݷʱ : 2024/12/25 0:02:13һ µȫĶ

һѡѡ⣨ÿС2֣10С⣬20֣

1 ̹ҪȫĹһг DZ Aǿ Bն Cȶ DӲ 2ӦĹϵǣ

AӦ BӦĴ CʸӦDZ DӦǷֲļ 3ԲŤתʱƽ裬ΪԲŤתʱ棨

A״ߴ粻䣬ֱΪֱߡ B״ߴı䣬ֱΪֱߡ C״ߴ粻䣬ֱֱ߲ߡD״ߴı䣬ֱֱ߲ߡ

4ijֵָӦΪ

?s?200MPaģΪE?200GPaֱֽΪ2mmĸ˿һԲ

ϣʹ˿ɺ󲻲ΣԲֱСڣ A0.8 B1.6 C2.0 D2.4

5ûַıΣҪõ ȷֳ

Aƽ B߽ C D⻬ 6ͼʾӦѭrƽӦ

A -102010 B 301020

?m?ӦaֱΪ

?C

11?32010 D 31020

??7һӦ״̬ͼʾӦ12

A 30MPa100 MPa50 MPa

B 50 MPa30MPa-50MPa C 50 MPa0-50Mpa D -50 MPa30MPa50MPa

?3ֱΪ

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8ͻصΣϵͳĶϵΪ A2 B3 C4 D5

9ѹٽĴС

A ѹܵѹСйأ B ѹ˵ȴСйأ C ѹ˲޹أ

D ѹ˵ȴС޹ء

10ͼ˷㵯߸ռܵλƣҪ˼ǸDZģ AEIΪ Bṹ߱Ϊֱߡ CMͼֱߡ DҪͼ(10)

MM

һֱߡ

30kNCD20kN/mB2q=F/a12F2F1m3m

1maaa1(e)

1ͼ (2) ͼ

ͼʾṹУBCһֱΪ2mmĸ˿ɣ˿ӦΪ

????160MPaq?30KN/m

BCɶٸ˿ɡ10֣ 2

B 3m A C

4m

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?20mmϱԵA㴦Ӧ?0??400?10?6ˮƽֱƽ

B㴦??300?10?6֪ϵĵģE?200GPaɱ??0.25a?2m

?45?ӦӰ죬ϵغFMeĴС

ġ14֣֪Բֱd

A d F

B 45? a Me

塢16֣ͼʾṹ

ABA?21.5cm2ģ

Wz?102cm3ϵӦ[?]?180MPaԲCDֱd?20mmϵĵģE?200Gpa?s?250MPa?p?200MPa ?1?100,?2?50ѹ˲ΪϸʱֱACDΪԼ֪l1?1.25ml2?0.55mF?25kNȶȫϵ[n]st?1.8У˴˽ṹǷȫ

ϡ

7 / 14

һѡ(ÿСĸѡУѡһȷ𰸣ȷ𰸵ɵڡÿС2֣20)

T?1.ŤתӦʽ??=

IP½( )

A.ν B.Բ C.Բν D.״

2.ͬһƳɵʵԲͿԲᣬȺͺͬŤնȽϴĸ?( ) A.ʵԲ B.Բ C.һ D.޷ж

3.νĸ߶һȼСһʱӦǿȿǣijı仯Ϊ( ) A. B.һ C.Сһ D.

4.ͼʾɶBӶΪ( )

aama(l?)ma3(l?)2 B. 2A.

EIEI5.ͼʾ΢ԪӦA. B. C. D.

max=100MPa max=0 max=50MPa max=200MPa

maxΪ?(

C.

ma D. EIama2(l?)2 EI )

6.õǿУͼʾԲǿʱõǿΪ( )

A.

PM2T2?()?4()AWZWPܣۦң

B.

PMT??AWZWPܣۦң

C.

(PM2T2?)?()AWZWPܣۦң

D.

(PM2T2?)?4()AWZWPܣۦң

7.ͼʾĸѹ˵IJϡֽͬʧȵȺΪ( ) A. (a),(b),(c),(d) B. (d),(a),(b),(c) C. (c),(d),(a),(b) D. (b),(c),(d),(a)

8.ͼʾ˼ѹնΪEAͼʾ Uбʽĸȷ?( )

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