Tham khảo tài liệu 'mechanics of materials - problems - solution manual part 16', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PROBLEM Knowing that the torsional spring at B is f constant K and that the bar AB is rigid determine the critical load Pa. SOLUTION Lei 0 be 1 6 -ie e lotì 1 A B . M - Kô X L sí o LO Oms-- o M - Px - a KỠ - FLO o K POO o pc K L PROBLEM Knowing that the spring at A is of constant jt and that the bar AB is rigid determine the critical load Pa. SOLUTION Lết 0 be k F - kx - i ZM rO k L sì nồ CoS k L s I n Ô F L CoS Ố - p X - o PL sỉrt 0 o kLzG - P2 Ô o kl - - o Per 1 k L n n ỉ n n LI oil I PROBLEM Two rigid bars AC and BC are connected as shown to a spring of constant k. Knowing that the spring can act in either tension or compression determine the critical load for the system. SOLUTION X - ÌL sínỡ kx - ị kl 1 c s Fes -zzs Ỡ - o EkL Pea E - Ồ Eks Ỡ Eg -SÍ0 Ồ Ej o ẲPẶg S M Ỡ o Joivx i A 2 Fỳ o P p - EfcCoS i klc s w 4k Ỡ o Pc -if l L PROBLEM Two rigid bars AC and BC are connected by a pin at c as shown. Knowing that the torsional spring at B is of constant K determine the critical load for the system. PROBLEM The rigid bar AD is attached to two springs of constant k and is in equilibrium in the position shown. Knowing that the equal and opposite loads p and P remain horizontal determine the magnitude pa of the critical load for the system. SOLUTION Lei ye AH ấ yc be lie sl We c4IO A5 of pữỉ 6 c J pos 4ỉve ưpIi A V-I . TLe Fs - kyg lre. - kye o Fc -F. ýe -y Fis ft. Cod p- e 5 kef 0 be fke change Ỵg Ỵc CL Ih 0 c - J2 St n 0 p Awf p FoZ iwx ft G of ft o tfP ft v oư rtÝ p 5 Oj k z0- rtốìo. cas Ô-Ptsínỡ o p - CoS Ô Let o -p - PROBLEM J A frame consists of four L-shaped members connected by four torsional springs each of constant K. Knowing that equal folds p are applied at points A and D as shown determine the critical value of the loads applied to the frame. n Ui ị Í ị Lẽl G be pile V O f on of 2A-ck L sliApeU v nei x ber. Anej fe ckftM e across i fs 2 ẶL. Si G - o KU k e - Px o . Site r rc r
