Complex sentence: Contrary to a widespread misconception, the shaped charge does not depend in any way on heating or melting for its effectivenenn' that is, the jet from a shaped charge does not melt its way through armor, as its effect is purely kinetic in nature.
Split into simpler sentences: Contrary to a widespread misconception, the shaped charge does not depend in any way on thermodynamical phenomena for its effectiveness. In particular, the "jet" of an exploding shaped charge does not "melt its way" through armor, its impact is purely kinetic in nature.