Page:NTSB RAR-77-10.pdf/34

 ._ 31 .. APPENDIX E

Figure 1 is a representation of the anticlimbers.

Figure 1. Anticlimber Geometry

The crush width, c, and the crush distance. A, are related by

c - Z/ZAR - A:

The anticlimber area being crushed is merely the crush width times the total thickness being crushed. Using this,along with the anti- climber yield stress,the crush force becomes

Fe * oy c tT

or substituting data

Fe -“(36.000) c (A'.273) ‘ 39,300 c.

The energy required'to deform the anticlimber any amount 5 is given by

5 EC F 10 Fe dA

Substituting the above equations into this formula and carrying Out the integration