In　this　study,　the　disordered　grid　interpenetrating　structure　(DGIS)　of　wire　turns　in　flexible　microporous　metal　rubber　(FMP-MR)　for　vibration　and　noise　reduction　is　investigated,　and　an　effective　constitutive　model　is　developed　to　dynamically　capture　the　nonlinear　mechanical　behavior　of　FMP-MR.　In　this　model,　a　micro　spring　element　with　adaptive　deformation　(MSEAD)　model　with　random　spatial　distribution　is　employed,　based　on　the　phenomena　of　irregular　overlapping　and　interlacing　of　material　turns.　The　spatial　distribution　of　micro　springs　and　the　evolution　of　the　contact　area　morphology　in　FMP-MR　are　taken　into　consideration　and　introduced　as　key　variables　in　model　development.　The　concept　of　combined　probability　distribution　(CPD)　of　micro　spring　pairs　between　wire　turns　in　FMPMR　is　proposed　to　characterize　the　random　combination　mode　of　material　turns.　Eventually,　based　on　the　micro-patterns　of　wire　turns　in　FMP-MR,　a　constitutive　model　including　macroscopic　parameters,　such　as　shape,　density,　wire　diameter,　helix　pitch,　and　wire　elastic　modulus,　and　microstructure　parameters,　such　as　spatial　distribution　of　wire　turns,　contact　shape,　and　friction　coefficient　is　developed　for　the　first　time.　By　analyzing　and　discussing　the　fitting　degree　of　quasi-static　compression　experimental　results　and　the　model　constitutive　curves,　the　validity　of　the　proposed　constitutive　model　is　quantitatively　confirmed　by　residual　analysis.　According　to　the　results,　the　FMP-MR　constitutive　model　based　on　DGIS　can　effectively　reflect　the　nonlinear　mechanical　behavior　and　complex　micro-contact　friction　phenomena　of　the　material.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.