IUTAM ililungu ukusukela ngo-1947.
IManyano yaMazwe ngaMazwe yeTheoretical and Applied Mechanics (IUTAM) yasekwa ngo-1946 ngenjongo yokudala ikhonkco phakathi kwabantu kunye nemibutho yesizwe okanye yamazwe ngamazwe ebandakanyeka kumsebenzi wenzululwazi (ithiyori okanye yokulinga) kubuxhakaxhaka okanye kwiinzululwazi ezinxulumeneyo. Ikwenza oko ubukhulu becala ngokulungiselela iintlanganiso zamazwe ngamazwe zokujongana neengxaki zenzululwazi. INkongolo yaMazwe ngaMazwe, equka iiseshini ezincinci kunye neeseshoni ezimiselweyo, ibanjwa rhoqo emva kweminyaka emine ngentatho-nxaxheba engathintelwanga, kwaye phakathi kwesihlanu neshumi iSymposia ekhethekileyo enabathathi-nxaxheba abamenyiweyo ibanjwa minyaka le. Ezi IUTAM Symposia ngamanye amaxesha ibanjelwe intsebenziswano kunye nezinye Unions kusapho ICSU okanye nemibutho enxulumene IUTAM. Okwangoku amalungu angama-51 abambelela kwi-IUTAM.