pst-pad – Draw sim­ple at­tach­ment sys­tems with PSTricks

The pack­age col­lects a set of graph­i­cal el­e­ments based on PStricks that can be used to fa­cil­i­tate dis­play of at­tach­ment sys­tems such as two dif­fer­ently shaped sur­faces with or with­out a fluid wedged in be­tween. Th­ese macros ease the dis­play of wet ad­he­sion mod­els and com­mon fric­tion sys­tems such as bound­ary lu­bri­ca­tion, elas­to­hy­dro­dy­namic lu­bri­ca­tion and hy­dro­dy­namic lu­bri­ca­tion.