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Designing Bolted Connections | Ansys Webinar

Webinar Description:

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.

Lap Joint

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.

Butt Joint

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

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