The nodes on element faces are defined by combinations of 𝑠,𝑡, 𝑧' = ±1. Origin of the coordinate system is at the element body center. ?Determine the shape function 𝑵𝟖(𝒔, 𝒕, 𝒛′) only. (Please do not waste time on 𝑁1 to 𝑁7.)...Show more