JoVE Logo

로그인

Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.

Figure 1

The angle between members AC and AB can be found by taking the inverse tangent of the ratio of the lengths of BC and AB, and the result obtained is 67.38°. A free-body diagram of joint A is considered, and all unknown forces are resolved into their respective components.

The vertical force equilibrium condition can then be used to calculate the force acting on member CA, which is equal to 173.08 N.

Equation 1

Similarly, the horizontal force equilibrium condition can be used to find the force FAB as 161.54 N.

Equation 2

Free-body diagrams of joints B and C are considered, and the vertical and horizontal force equilibrium conditions are applied to calculate the unknown forces FBD , FCD , and FEC. The resulting values for FBD , FCD , and FEC are 161.53 N, 173.08 N and 207.70 N, respectively.

Free-body diagrams of joints D and E are finally considered, and the vertical and horizontal force equilibrium conditions are applied. This gives the values of FED and FDF as 138.46 N and 265.39 N, respectively.

Tags

Method Of JointsTruss StructureFrictionless JointsForce EquilibriumFree body DiagramJoint AMember ForcesVertical Force EquilibriumHorizontal Force EquilibriumUnknown ForcesTension CalculationForce Components

장에서 6:

article

Now Playing

6.5 : Method of Joints: Problem Solving II

Structural Analysis

468 Views

article

6.1 : 구조체 소개

Structural Analysis

926 Views

article

6.2 : 심플 트러스

Structural Analysis

1.5K Views

article

6.3 : 조인트 방법

Structural Analysis

686 Views

article

6.4 : 관절 방법: 문제 해결 I

Structural Analysis

992 Views

article

6.6 : Zero-Force 멤버

Structural Analysis

1.3K Views

article

6.7 : 섹션 방법

Structural Analysis

538 Views

article

6.8 : 섹션 방법: 문제 해결 I

Structural Analysis

467 Views

article

6.9 : 섹션 방법: 문제 해결 II

Structural Analysis

868 Views

article

6.10 : 공간 트러스

Structural Analysis

721 Views

article

6.11 : 공간 트러스: 문제 해결

Structural Analysis

529 Views

article

6.12 : 프레임

Structural Analysis

482 Views

article

6.13 : 프레임: 문제 해결 I

Structural Analysis

364 Views

article

6.14 : 프레임: 문제 해결 II

Structural Analysis

166 Views

article

6.15 : 기계

Structural Analysis

224 Views

See More

JoVE Logo

개인 정보 보호

이용 약관

정책

연구

교육

JoVE 소개

Copyright © 2025 MyJoVE Corporation. 판권 소유