TY - JOUR
AU - Partom, Yehuda
PY - 2022/12/27
Y2 - 2024/06/17
TI - Modeling Dynamic Compaction of Porous Materials
JF - European Journal of Applied Sciences
JA - EJAS
VL - 10
IS - 6
SE - Articles
DO - 10.14738/aivp.106.13675
UR - https://journals.scholarpublishing.org/index.php/AIVP/article/view/13675
SP - 577-586
AB - <p><strong>To model dynamic compaction of a porous material we need: 1) an equation of state (EOS) for the porous material in terms of the EOS of its matrix; and 2) a compaction law. For an EOS people usually use Hermann's suggestion, as in his Pα [1] model. For a compaction law people usually use the results of a spherical shell collapse analysis (Carroll and Holt model [2]). In their original paper Carroll and Holt do both: the quasi-static shell collapse and the dynamic shell collapse. In their dynamic analysis, however, they ignore density changes of the matrix. In what follows we: 1) revisit the spherical shell collapse problem but with density changes taken into account; 2) develop a dynamic compaction law based on our <u>overstress</u> principle; 3) implement the different compaction laws mentioned above in a hydro-code; and 4) run a planar impact problem and compare histories and profiles obtained with the different compaction laws. We find that: 1) dynamic compaction laws give entirely different results from quasi-static compaction laws; 2) taking density changes into account do make a certain difference.</strong></p>
ER -