8/19/2019 SOAL MKB 1

1/2

SOAL UJIAN MID SEMESTER GENAP 2014 - 2015Mata Kuliah : MEKANIKA KEKUATAN BAHAN (Kelas Ir. Dwi Basuki Wibowo, MS.

Waktu : !"# $e%itSi&at : Tutu' Buku

!. The rii) bar AD is su''orte) b* two steel wires o& !.+ $$ )ia$eter (E "##

-a a%) a 'i% a%) bra/ket at D. K%owi% that the wires were i%itiall* taut,)eter$i%e : (a the a))itio%al te%sio% i% ea/h wire whe% a 0## N loa) isa''lai) at D, (b the /orres'o%)i% )e1e/tio% o& 'oi%t D.

". The 2erti/al 'ortio% o& the 'ress show% /o%sists o& a re/ta%ular tube o& wallthi/k%ess t !# $$. K%owi% that the 'ress has bee% tihte%e) o% woo)e%'la%ks bei% lue) toether u%til "# kN, )eter$i%e the stress at: (a 'oi%tA, (b 'oi%t B.

3. The bea$ show% bellowe) has a /ross se/tio%al area i% the sha'e o& a /ha%%elas show% i% 4i. (b. Deter$i%e: (a the $a5i$u$ be%)i% stress a%) $a5i$u$sheari% stress that o//urs i% the bea$ at se/tio% a6a, (b the state o& stress at

'oi%t D.

7. The state o& 'la%e stress at a 'oi%t isre'rese%te) b* the ele$e%t show%bellowe). Usi% $ohr8s /ir/le,)eter$i%e the 'ri%/i'al stresses a%)'ri%/i'al 'la%es.

Soal No.Soal No.

D

8/19/2019 SOAL MKB 1

2/2