Article having impact resistant surface

An impact resistant oil pan comprising:

• an exterior surface having an impact portion disposed between a leading portion and a trailing portion, wherein said leading portion includes a wall and wherein said impact portion comprises a pair of end portions, wherein said pair of end portions defines a plane extending tangentially to each of said end portions and not intersecting said impact portion between said pair of end portions;
• a plurality of ribs extending outwardly from said exterior surface;
• said plurality of ribs including a top surface and a pair of side surfaces in spaced and parallel relationship and perpendicular to said exterior surface;
• a fillet interconnecting said exterior surface and each of said pair of side surfaces and having a fillet radius in the range from about 0.75 to about 2.00 mm;
• said exterior surface, said plurality of ribs and said fillet being integrally formed from a polymeric material filled with a reinforcing agent in an amount of from about 15 to 60 parts by weight based on a total weight of said polymeric material;
• said reinforcing agent comprising fibers that are substantially oriented in a primary direction with said plurality of ribs including a geometric orientation relative to said primary direction;
• wherein said impact portion of said exterior surface defines an arcuate configuration between said pair of end portions protruding outwardly for imparting impact resistance to said impact portion, wherein said arcuate configuration has an apex spaced from said wall and wherein said apex is also spaced from said plane, and
• wherein said plane intersects said wall at an angle of from about 100 to about 150 degrees.

An impact resistant article comprising:

• an exterior surface having an impact portion disposed between a leading portion and a trailing portion, wherein said leading portion includes a wall and wherein said impact portion comprises a pair of end portions, wherein said pair of end portions define a plane extending tangentially to each of said end portions and not intersecting said impact portion between said pair of end portions;
• a plurality of ribs extending outwardly from said exterior surface with said plurality of ribs including a top surface and a pair of side surfaces in spaced and parallel relationship and perpendicular to said exterior surface;
• and
• a fillet interconnecting said exterior surface and each of said pair of side surfaces;
• wherein said impact portion of said exterior surface defines an arcuate configuration between said pair of end portions protruding outwardly for imparting impact resistance to said impact portion, and wherein said arcuate configuration has an apex spaced from said wall and wherein said apex is also spaced from said plane, and
• wherein said plane intersects said wall at an angle of from about 100 to about 150 degrees;
• wherein said article is formed from a polymeric material comprising:
• a polyamide present in an amount of from about 35 to about 70 parts by weight based on a total weight of said polymeric material;
• a reinforcing agent present in an amount of from about 15 to about 60 parts by weight based on a total weight of said polymeric material;
• and
• an impact modifier present in an amount of from about 1 to about 20 parts by weight based on a total weight of said polymeric material, wherein said impact modifier is different from said reinforcing agent.