This webinar will explore various ways of designing bolted connections and discuss the pros and cons of each method.
Bolt Pretension & Contact Options
Topics include using beam elements to model bolts, contact options for bolted connections, and ways to apply bolt pretension.
Concept and Formulas for Bolted Connection Design
A type of structural joint known as a bolted connection uses bolts to link two or more structural components of a steel structure. A type of threaded fastener known as a bolt has a male thread and a preformed, complementary female thread, similar to nuts. To build a bolted connection, it is crucial to understand the bolt value and joint strength concepts, which are further explored.
Joint Types in Bolted Connections
In a bolted connection, the lap joint and butt joint are the two most common types of joints. Within these two types, there exist sub-types like quirky connections and pure moment connections, but those are outside the purview of this site.
The following explanations describe the sub-types of joints and their nature.
In a lap joint, the major connecting elements are positioned on top of one another to create an overlap, and the overlapping area is then bolted. An eccentricity is created as a result of the relationship itself.
A cover plate is used to link two pieces in this kind of joint. There are two types of butt joints: single cover butt joints and double cover butt joints, based on the number of cover plates.
Choose this on-demand webinar, Designing Bolted Connections, to learn more about bolts. Including, different types of bolts, and other sorts of butt and lap joints.
Bolted Connection & Most-Preferred Joints
The double cover butt joint is the most popular of the aforementioned joints for the reasons listed below.
- The bolt’s shear capability exceeds that of a lap joint.
- There is no eccentricity in the link.
Types of Bolted Connection Failure
Either the connecting plate or the bolt could fail in a fastened connection. It is crucial to take into account the “Limit States” or failure mechanisms of both the bolt and the plate as a result.
The following list includes potential limit states via which a bolted connection could fail.
Bolt Failure Modes in a Bolted Connection
- Shear Bolt Failure
- Bolts with Bearing Failure
- Bolt Tensile Failure
Additional Ansys Software Tips & Tricks Resources
- Analyzing normal and Tangential Elastic Foundations in Mechanical
- For support on Contained Fluid FEA Modeling with HSFLD242 Elements
- For Exporting a Deformed Geometry Shape Post-Analysis in Mechanical
- For guidance Multi-Step Analyses in Mechanical
- For Retrieving Beam Reaction Force in a Random Vibration Analysis
- Deploying Ansys Macro Programming vis *USE Command in Mechanical
- For replicating Fatigue Models from Start to Finish in Mechanical
- Setting up Acoustic Simulations of a Silencer
- For a step-by-step guide on 2D to 3D Submodeling in Mechanical
- For modeling Pipe16 Circumferential Stress in Mechanical
- For Support on performing ‘EKILL‘ in Workbench
- APDL Command Objects post-Spectral Analysis
- For Separating DB Database Files from RST Files
- Measuring Geometric Rotation in Mechanical WB
- Explicitly, CAD Geometry Deformation Plasticity
- Offsetting a Temperature Result to Degrees Absolute
- For general guidance on Ansys Post-Processing
- Finally, for basic Ansys Software Installation and License Manager Updates