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Predicting the compression strength of impact-damaged sandwich panels
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ratcliffe Sr., James Jackson, Wade Schaff, Jeffery |
| Copyright Year | 1990 |
| Description | The objective of this work was to develop a technique for predicting the residual compression strength of sandwich panels containing impact damage in one facesheet. The technique was tailored to predict the strength of specimens that exhibit a failure mode involving the formation of kink bands at locations of peak strain in the region of impact damage. Under continued compression loading, the kink bands propagate in a stable manner perpendicular to the applied load. When a critical kink-band length is reached, growth becomes unstable corresponding to panel failure. The analysis follows in two sections. The first section calculates the far-field stress required for stable kink-band growth and the second calculates that required for unstable growth. The residual strength prediction is made when the stress for stable growth becomes equal to that for unstable kink-band growth. Initial comparisons between analysis and experiment show good agreement. |
| File Size | 1210164 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050220587 |
| Archival Resource Key | ark:/13960/t0ht7j79g |
| Language | English |
| Publisher Date | 1990-01-11 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Panels Kink Bands Far Fields Failure Modes Compressive Strength Fracture Strength Sandwich Structures Impact Damage Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
