Dynamics and Failure Criteria of Structural Connections
Abstract
This research was conducted to establish new knowledge of failure criteria for concrete connections which will enable the USAF to predict, with acceptable accuracy, the failure modes of aircraft shelters. Of primary importance was the effect of extremely high stress rates on ultimate failure strength of the crown connections. A total of seven static and fourteen dynamic tests were conducted and comparison made of the two test series to establish a dynamic strength factor. A drop-tower was constructed for the dynamic tests which enabled rise times to failure of under 4 milliseconds to be achieved. Although most of the effort was concentrated on full-scale connections, static tests to failure were also conducted on one-third scale models. These results, when considering the effects of scaling, were in agreement with full-scale tests. For the complicated loading of bending and tension on a connection, the resulting dynamic strength factor was determined to be 1.3, or 130 percent of static tensile strength.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1977
- Accession Number
- ADA040460
Entities
People
- J. H. Smith
- K. L. Hoitsma
- W. P. Vann
Organizations
- Texas Tech University